In human cellular respiration, what is the net gain of ATP molecules produced directly via substrate-level phosphorylation per single molecule of glucose during Glycolysis?
(A)2 ATP
(B)4 ATP
(C)36 ATP
(D)38 ATP
โ Correct Answer: Option A
(2 ATP)
๐ก Step-by-Step Explanation:
During glycolysis, 4 ATP molecules are synthesized, but 2 ATP molecules are consumed during the preparatory phase, yielding a net gain of 2 ATP per glucose.
Which region of the human nephron is primarily responsible for the obligate reabsorption of approximately 65-70% of filtered water, sodium, and 100% of glucose and amino acids?
(A)Proximal Convoluted Tubule (PCT)
(B)Descending Loop of Henle
(C)Distal Convoluted Tubule (DCT)
(D)Collecting Duct
โ Correct Answer: Option A
(Proximal Convoluted Tubule (PCT))
๐ก Step-by-Step Explanation:
The Proximal Convoluted Tubule (PCT) with its dense brush-border microvilli performs bulk obligate reabsorption of electrolytes, water, glucose, and amino acids.
Which of the following organic reagents is used to distinguish between aldehydes and ketones by producing a characteristic silver mirror on the test tube wall?
(A)Tollens' Reagent (Ammoniacal Silver Nitrate)
(B)Fehling's Solution
(C)Lucas Reagent
(D)Benedict's Solution
โ Correct Answer: Option A
(Tollens' Reagent (Ammoniacal Silver Nitrate))
๐ก Step-by-Step Explanation:
Tollens' reagent [Ag(NHโ)โ]โบ oxidizes aliphatic and aromatic aldehydes to carboxylate ions while being reduced to metallic elemental silver, forming a silver mirror.
A 55-year-old male presents to the Emergency Department with crushing substernal chest pain radiating to the left arm and jaw. ECG demonstrates ST-segment elevation in leads II, III, and aVF. Which coronary artery is most likely occluded?
(A)Left Anterior Descending (LAD)
(B)Right Coronary Artery (RCA)
(C)Left Circumflex Artery (LCx)
(D)Left Main Coronary Artery
โ Correct Answer: Option B
(Right Coronary Artery (RCA))
๐ก Step-by-Step Explanation:
ST-elevation in inferior leads (II, III, aVF) diagnosticates an acute inferior wall myocardial infarction (STEMI), which is supplied by the Right Coronary Artery (RCA) in 85-90% of individuals.
๐ท๏ธ PNC Licensure Examination โข 2024
Pharmacology & Nursing Care
Question 5 of 200
Prior to administering Digoxin (a cardiac glycoside) to an adult patient, the registered nurse must assess:
(A)Apical pulse for 1 full minute (withhold if < 60 bpm)
(B)Respiratory rate for 30 seconds
(C)Urine output over past 24 hours
(D)Blood glucose level
โ Correct Answer: Option A
(Apical pulse for 1 full minute (withhold if < 60 bpm))
๐ก Step-by-Step Explanation:
Digoxin slows ventricular heart rate and enhances contractility. The nurse must auscultate the apical pulse for 60 seconds; if the heart rate is below 60 bpm, the dose is withheld to prevent lethal bradyarrhythmia.
๐ท๏ธ PM&DC MDCAT โข 2025 (KMU)
General Knowledge
Question 6 of 200
What was the main reason of disqualification of Arial Sharon for office of Prime Minister of Israel?
(A)He completed two terms
(B)He was impeached
(C)Due to Illness
(D)None of these
โ Correct Answer: Option C
(Due to Illness)
๐ก Step-by-Step Explanation:
Ariel Sharon was incapacitated by a massive stroke in early 2006, which led to his permanent inability to perform his duties.
๐ท๏ธ PM&DC MDCAT โข 2025 (PMDC Official)
General Knowledge
Question 7 of 200
What are the two seas linked by Suez Canal?
(A)The Mediterranean Sea and Baltic Sea
(B)The Mediterranean Sea and Red Sea
(C)The Black Sea and Baltic Sea
(D)The Black Sea and South China Sea
โ Correct Answer: Option B
(The Mediterranean Sea and Red Sea)
๐ก Step-by-Step Explanation:
The Suez Canal is an artificial sea-level waterway in Egypt that connects the Mediterranean Sea to the Red Sea.
๐ท๏ธ PM&DC MDCAT โข 2025 (KMU)
General Knowledge
Question 8 of 200
In which year European rulers captured Palestine from the Muslims in Crusade War?
(A)1095 A.D
(B)1099 A.D
(C)1115 A.D
(D)1199 A.D
โ Correct Answer: Option B
(1099 A.D)
๐ก Step-by-Step Explanation:
The First Crusade culminated in the Siege of Jerusalem in 1099 A.D., when European forces captured the city.
๐ท๏ธ PM&DC MDCAT โข 2025 (KMU)
General Knowledge
Question 9 of 200
Head Office of UNESCO is located at:
(A)Paris
(B)Geneva
(C)London
(D)Washington
โ Correct Answer: Option A
(Paris)
๐ก Step-by-Step Explanation:
UNESCO is headquartered in Paris, France, where it coordinates international cooperation in education, science, and culture.
๐ท๏ธ PM&DC MDCAT โข 2025 (DUHS)
General Knowledge
Question 10 of 200
An electric kettle used for boiling hard water has a white scale deposited on its heating element. This consists of:
(A)Sugar
(B)Common Salt
(C)Carbonates of Calcium and Magnesium
(D)Sodium Carbonate
โ Correct Answer: Option C
(Carbonates of Calcium and Magnesium)
๐ก Step-by-Step Explanation:
Limescale is primarily composed of calcium and magnesium carbonates that precipitate out of hard water when heated.
๐ท๏ธ PM&DC MDCAT โข 2025 (DUHS)
General Knowledge
Question 11 of 200
Pyorrhea is a disease of the:
(A)Nose
(B)Gums
(C)Heart
(D)Lungs
โ Correct Answer: Option B
(Gums)
๐ก Step-by-Step Explanation:
Pyorrhea, also known as periodontitis, is a severe gum infection that damages the soft tissue and can destroy the bone supporting teeth.
๐ท๏ธ PM&DC MDCAT โข 2025 (DUHS)
General Knowledge
Question 12 of 200
Two solution are said to be isotonic when they:
(A)Have the same osmotic pressure
(B)When they are of equal concentration
(C)Contain the same solute dissolved in them
(D)Have the same vapour pressure
โ Correct Answer: Option A
(Have the same osmotic pressure)
๐ก Step-by-Step Explanation:
Isotonic solutions exert equal osmotic pressure across a semipermeable membrane, resulting in no net movement of water.
๐ท๏ธ PM&DC MDCAT โข 2025 (SZABMU)
General Knowledge
Question 13 of 200
During the burning of fuels, carbon and hydrogen present in the fuels are:
(A)Released into the atmosphere
(B)Converted into carbon dioxide and water vapour
(C)Absorbed by the surrounding
(D)None of these
โ Correct Answer: Option B
(Converted into carbon dioxide and water vapour)
๐ก Step-by-Step Explanation:
Combustion is a chemical reaction with oxygen that transforms hydrocarbons into carbon dioxide and water while releasing energy.
๐ท๏ธ PM&DC MDCAT โข 2025 (PMDC Official)
General Knowledge
Question 14 of 200
A catalyst is a substance which:
(A)Stops a chemical reaction
(B)Normal a chemical reaction
(C)Increases the speed of a reaction
(D)Decreases the speed of a reaction
โ Correct Answer: Option C
(Increases the speed of a reaction)
๐ก Step-by-Step Explanation:
A catalyst lowers the activation energy of a chemical reaction, thereby increasing its rate without being consumed.
๐ท๏ธ PM&DC MDCAT โข 2025 (SZABMU)
General Knowledge
Question 15 of 200
The minimum distance between the sun and the earth occurs on:
(A)December, 22
(B)June, 21
(C)September, 22
(D)January, 03
โ Correct Answer: Option D
(January, 03)
๐ก Step-by-Step Explanation:
The point at which the Earth is closest to the sun is called the Perihelion.
This event occurs annually around January 3 or 4, when the Earth is approximately 147.1 million kilometers away from the sun.
๐ท๏ธ PM&DC MDCAT โข 2025 (PMDC Official)
General Knowledge
Question 16 of 200
The rate of rotation of the earth on its axis is highest on:
(A)January, 3
(B)December, 22
(C)July, 4
(D)It never changes
โ Correct Answer: Option D
(It never changes)
๐ก Step-by-Step Explanation:
The Earth's rotational speed remains relatively constant, though its orbital speed varies as it moves along its elliptical path.
๐ท๏ธ PM&DC MDCAT โข 2025 (DUHS)
General Knowledge
Question 17 of 200
'One Astronomical Unit' is the average distance between:
(A)Earth and the Sun
(B)Earth and the Moon
(C)Jupiter and the Sun
(D)Pluto and the Sun
โ Correct Answer: Option A
(Earth and the Sun)
๐ก Step-by-Step Explanation:
An Astronomical Unit (AU) represents the mean distance between the center of the Earth and the center of the Sun, approximately 150 million km.
๐ท๏ธ PM&DC MDCAT โข 2025 (PMDC Official)
General Knowledge
Question 18 of 200
The moon's period of revolution with reference to the sun is:
(A)Equal to one solar month
(B)Equal to one sidereal month
(C)Equal to one synodic month
(D)None of these
โ Correct Answer: Option C
(Equal to one synodic month)
๐ก Step-by-Step Explanation:
The synodic month, which lasts about 29.5 days, is the time it takes for the Moon to return to the same position relative to the Sun.
๐ท๏ธ PM&DC MDCAT โข 2025 (UHS)
General Knowledge
Question 19 of 200
We always see the same face of the moon because:
(A)It is smaller than the earth
(B)It revolves on its axis in a direction opposite that of the earth
(C)It takes equal time for both revolution around the earth and rotation on its own axis
(D)It rotates at the same speed as the earth around the sun
โ Correct Answer: Option C
(It takes equal time for both revolution around the earth and rotation on its own axis)
๐ก Step-by-Step Explanation:
Tidal locking causes the Moon's rotational period to match its orbital period around the Earth, keeping one side permanently facing us.
๐ท๏ธ PM&DC MDCAT โข 2025 (DUHS)
General Knowledge
Question 20 of 200
Which place will experience sunlight for the longest period in summer?
(A)Mumbai
(B)Srinagar
(C)Cheney
(D)Calcutta
โ Correct Answer: Option B
(Srinagar)
๐ก Step-by-Step Explanation:
Higher latitude cities like Srinagar experience longer daylight hours during the summer months compared to cities closer to the equator.
๐ท๏ธ PM&DC MDCAT โข 2025 (SZABMU)
General Knowledge
Question 21 of 200
Which continent has the highest density of population?
(A)Asia
(B)Europe
(C)Africa
(D)North America
โ Correct Answer: Option A
(Asia)
๐ก Step-by-Step Explanation:
Asia is the most populous continent and contains several of the world's most densely populated regions and countries.
๐ท๏ธ PM&DC MDCAT โข 2025 (UHS)
General Knowledge
Question 22 of 200
Which countries lie on either side of the Radcliff Line?
(A)India and Bangladesh
(B)Nepal and Bhutan
(C)North and South Korea
(D)India and Pakistan
โ Correct Answer: Option D
(India and Pakistan)
๐ก Step-by-Step Explanation:
The Radcliffe Line was the boundary demarcation line between the Indian and Pakistani portions of the Punjab and Bengal provinces.
๐ท๏ธ PM&DC MDCAT โข 2025 (KMU)
General Knowledge
Question 23 of 200
What is the correlation of the date of award of Nobel Prize with the person who instituted the award?
(A)Death anniversary of Alfred Nobel
(B)Birth anniversary of Alfred Nobel
(C)With the discovery of Dynamite
(D)None of these
โ Correct Answer: Option A
(Death anniversary of Alfred Nobel)
๐ก Step-by-Step Explanation:
The Nobel Prizes are traditionally presented annually on December 10, the anniversary of Alfred Nobel's death in 1896.
๐ท๏ธ PM&DC MDCAT โข 2025 (KMU)
General Knowledge
Question 24 of 200
Which of the following statements in respect of Nobel Prize and its founder is wrong?
(A)Alfred Bernhard Nobel was a Swedish Chemist and Chemical Engineer
(B)Nobel Prize is one of the world's highest valued awards
(C)In 1867 along with his father Alfred Nobel discovered dynamite, which earned him a lot of fortune
(D)It is awarded on December 10, every year
โ Correct Answer: Option C
(In 1867 along with his father Alfred Nobel discovered dynamite, which earned him a lot of fortune)
๐ก Step-by-Step Explanation:
Alfred Nobel invented dynamite independently in 1867; he did not discover it with his father.
๐ท๏ธ PM&DC MDCAT โข 2025 (PMDC Official)
General Knowledge
Question 25 of 200
The first Nobel Prize given to the Asian was for the work in?
(A)Chemistry
(B)Physiology
(C)Medicine
(D)Literature
โ Correct Answer: Option D
(Literature)
๐ก Step-by-Step Explanation:
Rabindranath Tagore was the first Asian to receive a Nobel Prize, awarded for Literature in 1913.
๐ท๏ธ PM&DC MDCAT โข 2025 (DUHS)
General Knowledge
Question 26 of 200
Where is Red Square situated?
(A)Kashmir
(B)Moscow
(C)China
(D)New York
โ Correct Answer: Option B
(Moscow)
๐ก Step-by-Step Explanation:
Red Square is a city square in Moscow, Russia, that separates the Kremlin from the historic merchant quarter.
๐ท๏ธ PM&DC MDCAT โข 2025 (UHS)
General Knowledge
Question 27 of 200
Which street is famous for Stock Exchange Market?
(A)Fleet Street, London
(B)Downing Street, London
(C)Wall Street, New York
(D)Broadway, New York
โ Correct Answer: Option C
(Wall Street, New York)
๐ก Step-by-Step Explanation:
Wall Street is a street in Lower Manhattan that is the historic headquarters of some of the largest US brokerages and investment banks.
๐ท๏ธ PM&DC MDCAT โข 2025 (KMU)
Medical Sciences
Question 28 of 200
Which laboratory marker is the most sensitive and cardiac-specific biomarker for diagnosing acute myocardial infarction within 3-12 hours of onset?
(A)Aspartate aminotransferase (AST)
(B)Cardiac Troponin I (cTnI) / Troponin T (cTnT)
(C)Lactate dehydrogenase (LDH-1)
(D)Myoglobin alone
โ Correct Answer: Option B
(Cardiac Troponin I (cTnI) / Troponin T (cTnT))
๐ก Step-by-Step Explanation:
Cardiac troponins (I and T) are the gold-standard markers for myocardial necrosis due to their near-absolute myocardial specificity and high clinical sensitivity.
๐ท๏ธ PM&DC MDCAT โข 2025 (KMU)
Medical Sciences
Question 29 of 200
Widal test is a serological agglutination test historically utilized in developing countries for the presumptive diagnosis of:
๐ก Step-by-Step Explanation:
The Widal test measures agglutinating antibodies against O (somatic) and H (flagellar) antigens of Salmonella Typhi and Paratyphi.
๐ท๏ธ PM&DC MDCAT โข 2025 (PMDC Official)
Medical Sciences
Question 30 of 200
Which antihypertensive class is widely recommended as first-line therapy in diabetic patients with microalbuminuria to retard the progression of diabetic nephropathy?
(A)Loop diuretics
(B)ACE inhibitors / ARBs
(C)Beta-blockers
(D)Central alpha-2 agonists
โ Correct Answer: Option B
(ACE inhibitors / ARBs)
๐ก Step-by-Step Explanation:
ACE inhibitors and ARBs dilate efferent renal arterioles, decreasing intraglomerular hydrostatic pressure and providing proven renal protection in diabetic kidney disease.
๐ท๏ธ PM&DC MDCAT โข 2025 (SZABMU)
Medical Sciences
Question 31 of 200
The specific opioid antagonist used to reverse life-threatening respiratory depression in acute heroin or morphine overdose is:
(A)Naloxone
(B)Methadone
(C)Buprenorphine
(D)Naltrexone long-acting
โ Correct Answer: Option A
(Naloxone)
๐ก Step-by-Step Explanation:
Naloxone is a pure competitive antagonist at mu, kappa, and delta opioid receptors with rapid onset, utilized intravenously or intranasally for immediate reversal of opioid overdose.
๐ท๏ธ PM&DC MDCAT โข 2025 (SZABMU)
Medical Sciences
Question 32 of 200
A dry, persistent, non-productive cough in a patient taking an antihypertensive drug is a well-known adverse effect of which class?
(A)Angiotensin Converting Enzyme (ACE) Inhibitors
(B)Calcium Channel Blockers
(C)Angiotensin Receptor Blockers (ARBs)
(D)Thiazide diuretics
โ Correct Answer: Option A
(Angiotensin Converting Enzyme (ACE) Inhibitors)
๐ก Step-by-Step Explanation:
ACE inhibitors block the degradation of bradykinin and substance P in bronchial mucosa, accumulating these mediators and triggering an intractable cough in 5-20% of patients.
๐ท๏ธ PM&DC MDCAT โข 2025 (DUHS)
Medical Sciences
Question 33 of 200
What is the most common histological subtype of breast cancer diagnosed in adult females worldwide?
(A)Invasive lobular carcinoma
(B)Invasive ductal carcinoma (IDC / No special type)
(C)Medullary carcinoma
(D)Mucinous carcinoma
โ Correct Answer: Option B
(Invasive ductal carcinoma (IDC / No special type))
๐ก Step-by-Step Explanation:
Invasive ductal carcinoma (also designated as invasive breast carcinoma of no special type - NST) accounts for approximately 70-80% of all invasive breast malignancies.
๐ท๏ธ PM&DC MDCAT โข 2025 (SZABMU)
Medical Sciences
Question 34 of 200
The definitive diagnostic test for pulmonary tuberculosis endorsed by the WHO for rapid detection of Mycobacterium tuberculosis and rifampicin resistance is:
๐ก Step-by-Step Explanation:
GeneXpert MTB/RIF is an automated real-time PCR assay providing simultaneous detection of Mycobacterium tuberculosis and rifampicin-resistance mutations within two hours.
๐ท๏ธ PM&DC MDCAT โข 2024 (SZABMU)
General Knowledge
Question 35 of 200
'Digital divide' term is related with:
(A)Economics
(B)Socio economic difference technology era
(C)Political Science
(D)Journalism
โ Correct Answer: Option B
(Socio economic difference technology era)
๐ก Step-by-Step Explanation:
The digital divide refers to the gap between demographics and regions that have access to modern information technology and those that don't.
๐ท๏ธ PM&DC MDCAT โข 2024 (KMU)
General Knowledge
Question 36 of 200
Marsh gas, formed from decaying organic matter and in coal mines, is:
(A)Carbon Dioxide
(B)Methane
(C)Ethane
(D)Carbon Monoxide
โ Correct Answer: Option B
(Methane)
๐ก Step-by-Step Explanation:
Methane is commonly known as marsh gas because it is produced by the anaerobic bacterial decomposition of organic matter in wetlands.
๐ท๏ธ PM&DC MDCAT โข 2024 (UHS)
General Knowledge
Question 37 of 200
The acid used in batteries is:
(A)Acetic Acid
(B)Hydrochloric Acid
(C)Sulphuric Acid
(D)Nitric .cid
โ Correct Answer: Option C
(Sulphuric Acid)
๐ก Step-by-Step Explanation:
Lead-acid batteries, commonly used in vehicles, use a solution of sulphuric acid as the electrolyte.
๐ท๏ธ PM&DC MDCAT โข 2024 (SZABMU)
General Knowledge
Question 38 of 200
A day is added when one crosses:
(A)The equator from north to south
(B)280ยฐ longitude from west to east
(C)180ยฐ longitude from east to west
(D)The equator from south to north
โ Correct Answer: Option C
(180ยฐ longitude from east to west)
๐ก Step-by-Step Explanation:
When crossing the International Date Line (180ยฐ longitude) from east to west, one advances the calendar by one full day.
๐ท๏ธ PM&DC MDCAT โข 2024 (KMU)
General Knowledge
Question 39 of 200
Which is an organic rock?
(A)Marble
(B)Coal
(C)Granite
(D)Slate
โ Correct Answer: Option B
(Coal)
๐ก Step-by-Step Explanation:
Coal is an organic sedimentary rock formed from the accumulated and compressed remains of ancient plant matter.
๐ท๏ธ PM&DC MDCAT โข 2024 (PMDC Official)
General Knowledge
Question 40 of 200
Largest, area-wise dessert of Pakistan is:
(A)Cholistan
(B)Tharr
(C)Hisar
(D)None of these
โ Correct Answer: Option B
(Tharr)
๐ก Step-by-Step Explanation:
The Thar Desert, also known as the Great Indian Desert, is the largest desert in Pakistan, primarily located in Sindh.
๐ท๏ธ PM&DC MDCAT โข 2024 (PMDC Official)
General Knowledge
Question 41 of 200
Which newspaper does not belong to London?
(A)New Statesman
(B)The Guardian Weekly
(C)Dawn
(D)The Times
โ Correct Answer: Option C
(Dawn)
๐ก Step-by-Step Explanation:
Dawn is a major English-language newspaper in Pakistan, founded by Quaid-e-Azam Muhammad Ali Jinnah.
๐ท๏ธ PM&DC MDCAT โข 2024 (SZABMU)
General Knowledge
Question 42 of 200
The name of the news agency of UK is:
(A)United Press International
(B)Reuters
(C)Tass
(D)The Guardian
โ Correct Answer: Option B
(Reuters)
๐ก Step-by-Step Explanation:
Reuters is an international news organization headquartered in London and serves as a major news agency for the UK.
๐ท๏ธ PM&DC MDCAT โข 2024 (KMU)
English Language Comprehension
Question 43 of 200
I don't think that he is (to blame) for breaking the computer.
(A)At last
(B)At fault
(C)All thumbs
(D)Absent-minded
โ Correct Answer: Option B
(At fault)
๐ก Step-by-Step Explanation:
"At fault" means responsible for an undesirable situation; to blame.
๐ท๏ธ PM&DC MDCAT โข 2024 (PMDC Official)
Medical Sciences
Question 44 of 200
Which cranial nerve provides parasympathetic innervation to the thoracic and abdominal viscera up to the splenic flexure?
(A)Glossopharyngeal nerve (CN IX)
(B)Vagus nerve (CN X)
(C)Facial nerve (CN VII)
(D)Accessory nerve (CN XI)
โ Correct Answer: Option B
(Vagus nerve (CN X))
๐ก Step-by-Step Explanation:
The Vagus nerve (Cranial Nerve X) supplies extensive parasympathetic motor innervation to the heart, lungs, and gastrointestinal tract up to the distal transverse colon / splenic flexure.
๐ท๏ธ PM&DC MDCAT โข 2024 (DUHS)
Medical Sciences
Question 45 of 200
The coronary sinus, which drains most venous blood from the heart muscle, empties directly into the:
(A)Left atrium
(B)Right atrium
(C)Inferior vena cava
(D)Pulmonary artery
โ Correct Answer: Option B
(Right atrium)
๐ก Step-by-Step Explanation:
The coronary sinus delivers deoxygenated blood from the myocardium directly into the right atrium, between the orifice of the IVC and the AV opening.
๐ท๏ธ PM&DC MDCAT โข 2024 (UHS)
Medical Sciences
Question 46 of 200
What is the primary site of dietary iron absorption in the human digestive system?
(A)Stomach
(B)Duodenum and upper jejunum
(C)Terminal ileum
(D)Ascending colon
โ Correct Answer: Option B
(Duodenum and upper jejunum)
๐ก Step-by-Step Explanation:
Iron is actively absorbed in the duodenum and proximal jejunum via divalent metal transporter 1 (DMT1) and ferroportin enterocyte pathways.
๐ท๏ธ PM&DC MDCAT โข 2024 (SZABMU)
Medical Sciences
Question 47 of 200
A patient on warfarin therapy with an INR of 9.0 and no active bleeding should be managed primarily by withholding warfarin and administering:
(A)High-dose protamine sulfate
(B)Low-dose oral Vitamin K1 (Phytonadione)
(C)Fresh frozen plasma 4 units immediately
(D)Recombinant factor VIIa
โ Correct Answer: Option B
(Low-dose oral Vitamin K1 (Phytonadione))
๐ก Step-by-Step Explanation:
For asymptomatic patients on warfarin with INR > 4.5 but < 10 without serious bleeding, withholding warfarin and administering small doses of oral Vitamin K1 (1-2.5 mg) safely lowers INR.
๐ท๏ธ PM&DC MDCAT โข 2024 (SZABMU)
Medical Sciences
Question 48 of 200
In adult Basic Life Support (BLS), what is the correct compression-to-ventilation ratio for a single rescuer in cardiopulmonary resuscitation (CPR)?
(A)15:2
(B)30:2
(C)5:1
(D)50:2
โ Correct Answer: Option B
(30:2)
๐ก Step-by-Step Explanation:
The standard universal chest compression-to-ventilation ratio for adult CPR by a single rescuer is 30 compressions followed by 2 rescue breaths at a rate of 100-120 compressions per minute.
๐ท๏ธ PM&DC MDCAT โข 2024 (KMU)
Medical Sciences
Question 49 of 200
Which of the following clinical signs is elicited by passive flexion of the patient's neck resulting in involuntary flexion of the hips and knees in meningitis?
(A)Kernig sign
(B)Brudzinski sign
(C)Babinski sign
(D)Chvostek sign
โ Correct Answer: Option B
(Brudzinski sign)
๐ก Step-by-Step Explanation:
Brudzinski's neck sign is positive when passive neck flexion elicits involuntary flexion of the lower extremities due to meningeal irritation.
๐ท๏ธ PM&DC MDCAT โข 2024 (SZABMU)
Medical Sciences
Question 50 of 200
Which clinical sign involves pain and sudden arrest of inspiration upon palpation of the right upper quadrant during deep inspiration in acute cholecystitis?
(A)Rovsing sign
(B)Murphy sign
(C)Cullen sign
(D)Grey Turner sign
โ Correct Answer: Option B
(Murphy sign)
๐ก Step-by-Step Explanation:
Murphy's sign is elicited by placing the hand beneath the right costal margin; sharp inspiratory arrest when the inflamed gallbladder descends onto the examining hand indicates acute cholecystitis.
๐ท๏ธ PM&DC MDCAT โข 2024 (PMDC Official)
Medical Sciences
Question 51 of 200
In municipal water purification, what is the recommended minimum free residual chlorine level required at the consumer's tap after 30 minutes of contact time?
(A)0.1 mg/L
(B)0.5 mg/L
(C)2.0 mg/L
(D)5.0 mg/L
โ Correct Answer: Option B
(0.5 mg/L)
๐ก Step-by-Step Explanation:
WHO and national drinking water standards prescribe a minimum free residual chlorine concentration of 0.5 mg/L (ppm) after at least 30 minutes of contact time at pH < 8.0.
๐ท๏ธ PM&DC MDCAT โข 2023 (UHS)
General Knowledge
Question 52 of 200
Which of the following Russian's oil and gas company, which provides oil and gas to European countries?
(A)BSGO Company
(B)Gazprome Company
(C)Gestapo Company
(D)Nindo Oil and Gas Company
โ Correct Answer: Option B
(Gazprome Company)
๐ก Step-by-Step Explanation:
Gazprom is a majority state-owned multinational energy corporation and the largest supplier of natural gas to Europe.
๐ท๏ธ PM&DC MDCAT โข 2023 (KMU)
General Knowledge
Question 53 of 200
What is the freezing point of heavy water?
(A)3.82 $^o$ C
(B)2.82 $^o$ C
(C)1.82 $^o$ C
(D)0.82 $^o$ C
โ Correct Answer: Option A
(3.82 $^o$ C)
๐ก Step-by-Step Explanation:
Heavy water (deuterium oxide) has a higher freezing point than normal water, occurring at approximately 3.82 degrees Celsius.
๐ท๏ธ PM&DC MDCAT โข 2023 (UHS)
General Knowledge
Question 54 of 200
"Every action has reaction which are equal but in opposite direction". The law is called:
(A)Newton's first law of motion
(B)Newton's second law of motion
(C)Newton's third law of motion
(D)None of these
โ Correct Answer: Option C
(Newton's third law of motion)
๐ก Step-by-Step Explanation:
Newton's third law states that for every action force, there is an equal and opposite reaction force.
๐ท๏ธ PM&DC MDCAT โข 2023 (KMU)
General Knowledge
Question 55 of 200
Common salt is obtained from seawater by:
(A)Sublimation
(B)Evaporation
(C)Crystallisation
(D)Filtration
โ Correct Answer: Option B
(Evaporation)
๐ก Step-by-Step Explanation:
Seawater is collected in shallow ponds where solar heat causes the water to evaporate, leaving behind salt crystals.
๐ท๏ธ PM&DC MDCAT โข 2023 (DUHS)
General Knowledge
Question 56 of 200
What is meant by the term 'cirrus'?
(A)A low cloud
(B)A rain-bearing cloud
(C)A high cloud
(D)A hail-hearing cloud
โ Correct Answer: Option C
(A high cloud)
๐ก Step-by-Step Explanation:
Cirrus clouds are delicate, wispy clouds that form at high altitudes (above 20,000 feet) and are composed of ice crystals.
๐ท๏ธ PM&DC MDCAT โข 2023 (SZABMU)
General Knowledge
Question 57 of 200
ECG is used for the diagnosis of ailments of:
(A)Brain
(B)Heart
(C)Liver
(D)Lungs
โ Correct Answer: Option B
(Heart)
๐ก Step-by-Step Explanation:
An electrocardiogram (ECG) records the electrical signals in your heart to check for various cardiac conditions.
๐ท๏ธ PM&DC MDCAT โข 2023 (KMU)
General Knowledge
Question 58 of 200
Which of the following does not belong to the group of Vitamin B complex?
(A)Thiamine
(B)Retinol
(C)Riboflavin
(D)Folic acid
โ Correct Answer: Option B
(Retinol)
๐ก Step-by-Step Explanation:
Retinol is the chemical name for Vitamin A, whereas Thiamine (B1), Riboflavin (B2), and Folic acid (B9) are part of the B complex.
๐ท๏ธ PM&DC MDCAT โข 2023 (KMU)
General Knowledge
Question 59 of 200
The Ajanta Caves are famous for:
(A)Unique wall paintings depicting life of Buddha
(B)Unique limestone features
(C)A new civilization was found here
(D)Lord Rama stayed here for some years
โ Correct Answer: Option A
(Unique wall paintings depicting life of Buddha)
๐ก Step-by-Step Explanation:
The Ajanta Caves in India contain masterpieces of Buddhist religious art, including world-renowned frescoes and paintings.
๐ท๏ธ PM&DC MDCAT โข 2023 (DUHS)
Medical Sciences
Question 60 of 200
The thoracic duct terminates and empties lymph into the venous circulation at the junction of the:
(A)Right subclavian and right internal jugular veins
(B)Left internal jugular and left subclavian veins (venous angle)
(C)Superior vena cava and azygos vein
(D)Left brachiocephalic and superior vena cava
โ Correct Answer: Option B
(Left internal jugular and left subclavian veins (venous angle))
๐ก Step-by-Step Explanation:
The thoracic duct enters the left venous angle, formed by the convergence of the left internal jugular and left subclavian veins.
๐ท๏ธ PM&DC MDCAT โข 2023 (PMDC Official)
Medical Sciences
Question 61 of 200
Which spinal cord tract carries conscious proprioception, two-point discrimination, and vibratory sensation to the sensory cortex?
(A)Lateral spinothalamic tract
(B)Dorsal column-medial lemniscal pathway (Fasciculus gracilis and cuneatus)
(C)Ventral spinothalamic tract
(D)Lateral corticospinal tract
โ Correct Answer: Option B
(Dorsal column-medial lemniscal pathway (Fasciculus gracilis and cuneatus))
๐ก Step-by-Step Explanation:
The dorsal column (fasciculus gracilis and cuneatus) conveys conscious proprioception, vibration, and fine touch, ascending through the medial lemniscus to the thalamus.
๐ท๏ธ PM&DC MDCAT โข 2023 (DUHS)
Medical Sciences
Question 62 of 200
Surfactant, which lowers surface tension in pulmonary alveoli to prevent end-expiratory collapse, is produced by:
(A)Type I pneumocytes
(B)Type II pneumocytes (great alveolar cells)
(C)Alveolar macrophages (dust cells)
(D)Clara / Club cells
โ Correct Answer: Option B
(Type II pneumocytes (great alveolar cells))
๐ก Step-by-Step Explanation:
Type II alveolar cells synthesize and secrete pulmonary surfactant (dipalmitoylphosphatidylcholine), crucial in preventing alveolar atelectasis.
๐ท๏ธ PM&DC MDCAT โข 2023 (UHS)
Medical Sciences
Question 63 of 200
Which hepatitis virus is a DNA virus that establishes chronic infection and increases risk of hepatocellular carcinoma?
(A)Hepatitis A virus
(B)Hepatitis B virus (HBV)
(C)Hepatitis C virus
(D)Hepatitis E virus
โ Correct Answer: Option B
(Hepatitis B virus (HBV))
๐ก Step-by-Step Explanation:
Hepatitis B virus is the only human hepatitis virus possessing a partially double-stranded circular DNA genome (Hepadnaviridae); HAV, HCV, HDV, and HEV are RNA viruses.
๐ท๏ธ PM&DC MDCAT โข 2023 (UHS)
Medical Sciences
Question 64 of 200
Which of the following is the drug of choice for the immediate management of acute anaphylactic shock?
(A)Intravenous hydrocortisone
(B)Intramuscular Epinephrine (Adrenaline) 1:1000 into anterolateral thigh
(C)Oral chlorpheniramine
(D)Nebulized salbutamol alone
โ Correct Answer: Option B
(Intramuscular Epinephrine (Adrenaline) 1:1000 into anterolateral thigh)
๐ก Step-by-Step Explanation:
Intramuscular Epinephrine (0.3-0.5 mg of 1:1000 solution in adults) is the immediate life-saving first-line intervention for anaphylaxis, addressing bronchospasm, laryngeal edema, and hypotension.
๐ท๏ธ PM&DC MDCAT โข 2023 (DUHS)
Medical Sciences
Question 65 of 200
A 55-year-old diabetic male presents with crushing retrosternal chest pain radiating to the left arm. ECG demonstrates ST-segment elevation in leads II, III, and aVF. Which coronary artery is most likely occluded?
(A)Left anterior descending artery (LAD)
(B)Right coronary artery (RCA)
(C)Left circumflex artery (LCx)
(D)Left main stem
โ Correct Answer: Option B
(Right coronary artery (RCA))
๐ก Step-by-Step Explanation:
Leads II, III, and aVF reflect the inferior wall of the left ventricle, which in approximately 85-90% of individuals (right-dominant circulation) is supplied by the Right Coronary Artery.
๐ท๏ธ PM&DC MDCAT โข 2023 (UHS)
Medical Sciences
Question 66 of 200
What is the hallmark diagnostic finding on bone marrow biopsy in aplastic anemia?
(A)Hypercellular marrow with excess blasts
(B)Hypocellular marrow replaced predominantly by fat cells (>70% adipocytes)
(C)Megaloblastic changes with giant band forms
(D)Extensive granulomatous infiltration
โ Correct Answer: Option B
(Hypocellular marrow replaced predominantly by fat cells (>70% adipocytes))
๐ก Step-by-Step Explanation:
Aplastic anemia results in profound pancytopenia and a hypocellular 'empty' bone marrow with prominent fatty replacement and absence of neoplastic infiltration.
๐ท๏ธ PM&DC MDCAT โข 2023 (UHS)
Medical Sciences
Question 67 of 200
In a patient presenting with Diabetic Ketoacidosis (DKA), what is the initial, most critical therapeutic step prior to insulin administration?
(A)Intravenous bicarbonate therapy
(B)Aggressive intravenous fluid resuscitation with 0.9% Normal Saline
(C)Intramuscular glucagon
(D)High-dose potassium infusion
โ Correct Answer: Option B
(Aggressive intravenous fluid resuscitation with 0.9% Normal Saline)
๐ก Step-by-Step Explanation:
Immediate fluid restoration (typically 1000-1500 mL of 0.9% isotonic saline over the first hour) restores intravascular volume, reduces counter-regulatory hormones, and enhances tissue perfusion.
๐ท๏ธ PM&DC MDCAT โข 2023 (PMDC Official)
Medical Sciences
Question 68 of 200
A 6-year-old child presents with periorbital edema, dark cola-colored urine, hypertension, and mild proteinuria 2 weeks following a streptococcal pharyngitis. What is the most likely diagnosis?
(A)Minimal change disease
(B)Post-streptococcal glomerulonephritis (PSGN)
(C)IgA nephropathy
(D)Henoch-Schonlein purpura
โ Correct Answer: Option B
(Post-streptococcal glomerulonephritis (PSGN))
๐ก Step-by-Step Explanation:
Acute PSGN typically manifests 1-3 weeks post-streptococcal throat infection with the nephritic syndrome: hematuria (cola-colored), edema, hypertension, and low serum C3 complement.
๐ท๏ธ PM&DC MDCAT โข 2023 (SZABMU)
Medical Sciences
Question 69 of 200
In evaluating burn injuries, the 'Rule of Nines' in an adult assigns what percentage of total body surface area (TBSA) to the entire anterior trunk (chest + abdomen)?
(A)9%
(B)18%
(C)27%
(D)36%
โ Correct Answer: Option B
(18%)
๐ก Step-by-Step Explanation:
Under Wallace's Rule of Nines: Head & Neck = 9%, Each Arm = 9%, Anterior Trunk = 18%, Posterior Trunk = 18%, Each Leg = 18%, Perineum = 1%.
๐ท๏ธ PM&DC MDCAT โข 2023 (UHS)
Medical Sciences
Question 70 of 200
Which epidemiological study design is best suited for investigating rare diseases or diseases with long latency periods?
(A)Cross-sectional survey
(B)Case-control study
(C)Prospective cohort study
(D)Ecological study
โ Correct Answer: Option B
(Case-control study)
๐ก Step-by-Step Explanation:
Case-control studies identify individuals with the disease (cases) and without (controls) and look backwards for exposure; they are economical and ideal for studying rare conditions.
๐ท๏ธ PM&DC MDCAT โข 2022 (PMDC Official)
General Knowledge
Question 71 of 200
Which of the following vessels of blood carry blood from different parts of the body to heart?
(A)Veins
(B)Arteries
(C)Capillaries
(D)Vessels
โ Correct Answer: Option A
(Veins)
๐ก Step-by-Step Explanation:
Veins are the blood vessels responsible for transporting deoxygenated blood from various body tissues back to the heart.
๐ท๏ธ PM&DC MDCAT โข 2022 (KMU)
General Knowledge
Question 72 of 200
Which of the following died of natural death:
(A)Indira Gandhi
(B)Mahatma Gandhi
(C)Rajiv Gandhi
(D)None of the above
โ Correct Answer: Option D
(None of the above)
๐ก Step-by-Step Explanation:
Indira Gandhi, Mahatma Gandhi, and Rajiv Gandhi were all victims of assassination rather than dying of natural causes.
๐ท๏ธ PM&DC MDCAT โข 2022 (KMU)
General Knowledge
Question 73 of 200
The weight of a rusted iron object is ________ that of an un-rusted one
(A)Appreciably more than
(B)The same as
(C)Less than
(D)None of these
โ Correct Answer: Option A
(Appreciably more than)
๐ก Step-by-Step Explanation:
Rusting adds the weight of oxygen and water from the environment to the original iron mass.
๐ท๏ธ PM&DC MDCAT โข 2022 (PMDC Official)
General Knowledge
Question 74 of 200
Which planet is closest to the sun?
(A)Mercury
(B)Pluto
(C)Earth
(D)Jupiter
โ Correct Answer: Option A
(Mercury)
๐ก Step-by-Step Explanation:
Mercury is the innermost planet of the solar system, orbiting at an average distance of about 58 million kilometers from the Sun.
๐ท๏ธ PM&DC MDCAT โข 2022 (DUHS)
General Knowledge
Question 75 of 200
Assuming the directions similar to those on the earth, which planet/planets will experience a sunrise in the west? (i) Mercury (ii) Uranus (iii) Saturn (iv) Venus
(A)(i) and (ii)
(B)(ii) and (iv)
(C)(i) and (iv)
(D)(iii) and (iv)
โ Correct Answer: Option B
((ii) and (iv))
๐ก Step-by-Step Explanation:
Venus and Uranus rotate on their axes in a retrograde direction (clockwise), causing the sun to appear to rise in the west.
๐ท๏ธ PM&DC MDCAT โข 2022 (PMDC Official)
General Knowledge
Question 76 of 200
On the day the sun is nearest to the earth, the earth, is said to be in:
(A)Aphelion
(B)Perihelion
(C)Apogee
(D)Perigee
โ Correct Answer: Option B
(Perihelion)
๐ก Step-by-Step Explanation:
Perihelion is the specific point in the orbit of a planet or comet where it is nearest to the Sun.
๐ท๏ธ PM&DC MDCAT โข 2022 (KMU)
General Knowledge
Question 77 of 200
Blizzards are characteristic of ________ region:
(A)Equatorial
(B)Tropical
(C)Antarctic
(D)Temperate
โ Correct Answer: Option C
(Antarctic)
๐ก Step-by-Step Explanation:
Blizzards are severe snowstorms with high winds and low visibility, most commonly associated with polar regions like the Antarctic.
๐ท๏ธ PM&DC MDCAT โข 2022 (SZABMU)
General Knowledge
Question 78 of 200
First women to win the Nobel Prize was:
(A)Mother Teresa
(B)Mrs. Aung San Suu Kyi
(C)Madame Marie Curie Sklodowska
(D)None of the above
โ Correct Answer: Option C
(Madame Marie Curie Sklodowska)
๐ก Step-by-Step Explanation:
Marie Curie was the first woman to win a Nobel Prize (Physics, 1903) and the first person to win two Nobel Prizes.
๐ท๏ธ PM&DC MDCAT โข 2022 (KMU)
General Knowledge
Question 79 of 200
Which of the following bodies certifies circulation figures of newspapers and periodicals?
(A)PTI
(B)ISI
(C)ABC
(D)None of these
โ Correct Answer: Option C
(ABC)
๐ก Step-by-Step Explanation:
The Audit Bureau of Circulations (ABC) is a non-profit organization that verifies and certifies the circulation of publications.
๐ท๏ธ PM&DC MDCAT โข 2022 (SZABMU)
General Knowledge
Question 80 of 200
The radio code signal of extreme distance is called:
(A)SO
(B)STD
(C)SOS
(D)None of these
โ Correct Answer: Option A
(SO)
๐ก Step-by-Step Explanation:
SOS is the internationally recognized Morse code distress signal, originally used for maritime communication.
๐ท๏ธ PM&DC MDCAT โข 2022 (DUHS)
General Knowledge
Question 81 of 200
Hingol Dam is situated in which province of Pakistan:
(A)Punjab
(B)Khyber Pakhtunkhwa
(C)Sindh
(D)Baluchistan
โ Correct Answer: Option D
(Baluchistan)
๐ก Step-by-Step Explanation:
Hingol Dam is proposed on the Hingol River in the Lasbela District of Baluchistan province.
๐ท๏ธ PM&DC MDCAT โข 2022 (UHS)
General Knowledge
Question 82 of 200
The currency of Indonesia is:
(A)Dollar
(B)Rupiah
(C)Lira
(D)Rupee
โ Correct Answer: Option B
(Rupiah)
๐ก Step-by-Step Explanation:
The Indonesian rupiah (IDR) is the official currency of Indonesia.
๐ท๏ธ PM&DC MDCAT โข 2022 (PMDC Official)
General Knowledge
Question 83 of 200
The national parliament of USA is called:
(A)White House
(B)Congress
(C)Upper House
(D)Diet House
โ Correct Answer: Option B
(Congress)
๐ก Step-by-Step Explanation:
The United States Congress is the bicameral legislature of the federal government, consisting of the House of Representatives and the Senate.
๐ท๏ธ PM&DC MDCAT โข 2022 (PMDC Official)
General Knowledge
Question 84 of 200
'The Gateway of India' is:
(A)Mumbai
(B)Delhi
(C)Kochi
(D)Bangalore
โ Correct Answer: Option A
(Mumbai)
๐ก Step-by-Step Explanation:
The Gateway of India is an arch-monument built during the 20th century in Mumbai to commemorate the landing of King George V.
๐ท๏ธ PM&DC MDCAT โข 2022 (SZABMU)
English Language Comprehension
Question 85 of 200
He is (very forgetful) and is always losing his glasses.
(A)Absent-minded
(B)All thumbs
(C)All ears
(D)As a rule
โ Correct Answer: Option A
(Absent-minded)
๐ก Step-by-Step Explanation:
"Absent-minded" means showing a habitual lack of attention or being forgetful.
๐ท๏ธ PM&DC MDCAT โข 2022 (PMDC Official)
Medical Sciences
Question 86 of 200
Which hormone is primarily responsible for triggering ovulation by producing a mid-cycle surge in females?
(A)Follicle-stimulating hormone (FSH)
(B)Luteinizing hormone (LH)
(C)Progesterone
(D)Prolactin
โ Correct Answer: Option B
(Luteinizing hormone (LH))
๐ก Step-by-Step Explanation:
A marked pre-ovulatory surge of Luteinizing Hormone (LH), stimulated by sustained high estrogen levels, triggers rupture of the Graafian follicle and release of the ovum.
๐ท๏ธ PM&DC MDCAT โข 2022 (SZABMU)
Medical Sciences
Question 87 of 200
Which sensory receptor is specialized for detecting changes in muscle length and the rate of change in length?
(A)Golgi tendon organ
(B)Muscle spindle
(C)Pacinian corpuscle
(D)Ruffini ending
โ Correct Answer: Option B
(Muscle spindle)
๐ก Step-by-Step Explanation:
Muscle spindles are stretch receptors located within the belly of muscles that primarily detect changes in length and velocity of stretch, mediating the myotatic (stretch) reflex.
๐ท๏ธ PM&DC MDCAT โข 2022 (SZABMU)
Medical Sciences
Question 88 of 200
In iron deficiency anemia, which of the following pattern of laboratory findings is typically observed?
(A)Decreased serum ferritin, increased Total Iron Binding Capacity (TIBC), low serum iron
(B)Increased serum ferritin, low TIBC, high iron
(C)Normal ferritin, low transferrin saturation, high hemoglobin
(D)High serum ferritin, low TIBC, normal iron
โ Correct Answer: Option A
(Decreased serum ferritin, increased Total Iron Binding Capacity (TIBC), low serum iron)
๐ก Step-by-Step Explanation:
Iron deficiency anemia presents with microcytic hypochromic red cells, depleted storage iron (low serum ferritin), elevated TIBC/transferrin, and reduced serum iron.
๐ท๏ธ PM&DC MDCAT โข 2022 (SZABMU)
Medical Sciences
Question 89 of 200
Which antibiotic is associated with a risk of cartilage damage and tendonitis/tendon rupture, especially involving the Achilles tendon?
โ Correct Answer: Option A
(Fluoroquinolones (e.g., Ciprofloxacin, Levofloxacin))
๐ก Step-by-Step Explanation:
Fluoroquinolones carry a black-box warning for arthropathy and tendinopathy, with Achilles tendon rupture occurring predominantly in elderly patients or concurrent steroid users.
๐ท๏ธ PM&DC MDCAT โข 2022 (UHS)
Medical Sciences
Question 90 of 200
Koplik spots on the buccal mucosa opposite the lower molars are pathognomonic early physical signs of:
(A)Rubella (German measles)
(B)Measles (Rubeola)
(C)Mumps
(D)Varicella (Chickenpox)
โ Correct Answer: Option B
(Measles (Rubeola))
๐ก Step-by-Step Explanation:
Koplik spotsโtiny bluish-white spots on an erythematous base on the buccal mucosaโappear 1-2 days before the generalized maculopapular rash of Measles.
๐ท๏ธ PM&DC MDCAT โข 2022 (SZABMU)
Medical Sciences
Question 91 of 200
The classical McBurney's point tenderness in acute appendicitis is anatomically situated at:
(A)Midpoint between the umbilicus and pubic symphysis
(B)One-third of the distance from the right anterior superior iliac spine (ASIS) to the umbilicus
(C)Right costal margin at the midclavicular line
(D)Left lower quadrant opposite the ASIS
โ Correct Answer: Option B
(One-third of the distance from the right anterior superior iliac spine (ASIS) to the umbilicus)
๐ก Step-by-Step Explanation:
McBurney's point corresponds to the base of the appendix, located one-third of the distance along the line connecting the right ASIS to the umbilicus.
๐ท๏ธ PM&DC MDCAT โข 2022 (DUHS)
Medical Sciences
Question 92 of 200
Which of the following is the most common site of ectopic pregnancy implantation?
(A)Cervix
(B)Ampulla of the Fallopian tube
(C)Ovary
(D)Peritoneal cavity
โ Correct Answer: Option B
(Ampulla of the Fallopian tube)
๐ก Step-by-Step Explanation:
Over 95% of ectopic pregnancies occur in the fallopian tube, with the ampullary segment being the single most common location (accounting for ~70% of tubal implantations).
๐ท๏ธ PM&DC MDCAT โข 2022 (DUHS)
Medical Sciences
Question 93 of 200
In epidemiology, the proportion of truly diseased individuals who test positive on a screening test is termed:
(A)Specificity
(B)Sensitivity
(C)Positive predictive value (PPV)
(D)Likelihood ratio
โ Correct Answer: Option B
(Sensitivity)
๐ก Step-by-Step Explanation:
Sensitivity represents true-positive rate: the ability of a screening test to correctly identify individuals who actually possess the disease [TP / (TP + FN)].
๐ท๏ธ PM&DC MDCAT โข 2021 (PMDC Official)
General Knowledge
Question 94 of 200
What is the main cause of earthquakes?
(A)Volcanic activities
(B)Tectonic plate's movement
(C)Tectonic dislocation
(D)All of above
โ Correct Answer: Option B
(Tectonic plate's movement)
๐ก Step-by-Step Explanation:
Most earthquakes are caused by the sudden release of energy along faults in the Earth's crust due to tectonic plate movements.
๐ท๏ธ PM&DC MDCAT โข 2021 (DUHS)
General Knowledge
Question 95 of 200
Pure water can be obtained from seawater by the process of:
(A)Filtration
(B)Distillation
(C)Evaporation
(D)None of these
โ Correct Answer: Option B
(Distillation)
๐ก Step-by-Step Explanation:
Distillation involves boiling seawater to create steam and then condensing it into pure liquid water, leaving salts behind.
๐ท๏ธ PM&DC MDCAT โข 2021 (DUHS)
General Knowledge
Question 96 of 200
Iron articles rust because of the formation of:
(A)Ferrous Chloride
(B)A mixture of ferrous and ferric hydroxides
(C)Ferric Sulphate
(D)Ferric Chloride
โ Correct Answer: Option B
(A mixture of ferrous and ferric hydroxides)
๐ก Step-by-Step Explanation:
Rusting is an oxidation process where iron reacts with oxygen and moisture to form hydrated iron oxides.
๐ท๏ธ PM&DC MDCAT โข 2021 (KMU)
General Knowledge
Question 97 of 200
What is the unit of measurement of the distances of stars from the earth?
(A)Light year
(B)Fathoms
(C)Nautical miles
(D)Kilometres
โ Correct Answer: Option A
(Light year)
๐ก Step-by-Step Explanation:
A light year is the distance that light travels in a vacuum in one Julian year, used to measure vast interstellar distances.
๐ท๏ธ PM&DC MDCAT โข 2021 (DUHS)
General Knowledge
Question 98 of 200
On which day/days do the spring tides occur? (i) New moon (ii) First quarter of the moon (iii) Third quarter of the moon (iv) Full moon
(A)(i), (ii) and (iv)
(B)(ii), (iii) and (iv)
(C)(i) and (iv)
(D)(ii) and (iii)
โ Correct Answer: Option C
((i) and (iv))
๐ก Step-by-Step Explanation:
Spring tides occur when the Sun, Earth, and Moon are aligned during the new moon and full moon phases, resulting in higher high tides.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
General Knowledge
Question 99 of 200
The longest day in Australia:
(A)2021-06-01 00:00:00
(B)2022-09-01 00:00:00
(C)2022-12-01 00:00:00
(D)2023-03-01 00:00:00
โ Correct Answer: Option C
(2022-12-01 00:00:00)
๐ก Step-by-Step Explanation:
Because Australia is in the Southern Hemisphere, its longest day occurs during the summer solstice in December.
๐ท๏ธ PM&DC MDCAT โข 2021 (SZABMU)
General Knowledge
Question 100 of 200
What is the importance of ozone in the atmosphere?
(A)It provides protection against ultraviolet radiation
(B)It provides condensation nuclei
(C)It creates the greenhouse effect on earth
(D)It helps scatter blue light
โ Correct Answer: Option A
(It provides protection against ultraviolet radiation)
๐ก Step-by-Step Explanation:
The ozone layer in the stratosphere absorbs the majority of the Sun's harmful ultraviolet (UV) radiation.
๐ท๏ธ PM&DC MDCAT โข 2021 (DUHS)
General Knowledge
Question 101 of 200
What is the name given to Native American Indians?
(A)Bushmen
(B)Alpine
(C)Amerinds
(D)Mestizoes
โ Correct Answer: Option C
(Amerinds)
๐ก Step-by-Step Explanation:
'Amerind' is a portmanteau of 'American Indian' used to refer to the indigenous peoples of the Americas.
๐ท๏ธ PM&DC MDCAT โข 2021 (KMU)
General Knowledge
Question 102 of 200
Which countries are separated by the Durand Line?
(A)India and Pakistan
(B)Pakistan and Afghanistan
(C)India and China
(D)China and USSR
โ Correct Answer: Option B
(Pakistan and Afghanistan)
๐ก Step-by-Step Explanation:
The Durand Line is the 2,640-kilometer international border between Afghanistan and Pakistan, established in 1893.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
General Knowledge
Question 103 of 200
Nobel Prize in Economics is known as:
(A)Nobel Prize in Economic Science
(B)Alfred Nobel Memorial Economics Prize
(C)Alfred Nobel Memorial Prize in Economic Sciences
(D)There is no special name as in the case of other categories of Nobel Prizes
โ Correct Answer: Option C
(Alfred Nobel Memorial Prize in Economic Sciences)
๐ก Step-by-Step Explanation:
The economics prize is technically the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
General Knowledge
Question 104 of 200
TULF stands for Tamil United:
(A)Liberation Fund
(B)Liberation Front
(C)Liberation Force
(D)Liberation Forum
โ Correct Answer: Option B
(Liberation Front)
๐ก Step-by-Step Explanation:
The Tamil United Liberation Front is a political alliance in Sri Lanka that sought to represent the interests of the Tamil minority.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
General Knowledge
Question 105 of 200
ASEAN refers to Association of South-East:
(A)Asian Nations
(B)Arab Nations
(C)American Nations
(D)African Nations
โ Correct Answer: Option A
(Asian Nations)
๐ก Step-by-Step Explanation:
ASEAN is a regional intergovernmental organization comprising ten countries in Southeast Asia, promoting cooperation and integration.
๐ท๏ธ PM&DC MDCAT โข 2021 (PMDC Official)
General Knowledge
Question 106 of 200
The famous sufi saint Sachall Sarmast belongs to which province of Pakistan:
(A)Punjab
(B)Baluchistan
(C)Sindh
(D)None of these
โ Correct Answer: Option C
(Sindh)
๐ก Step-by-Step Explanation:
Sachal Sarmast was an 18th-century Sufi poet from Sindh, known for writing in seven languages including Sindhi and Persian.
๐ท๏ธ PM&DC MDCAT โข 2021 (KMU)
General Knowledge
Question 107 of 200
LASER is an acronym for Light Amplification by:
(A)Stimulated Emission of Radio Waves
(B)Stimulated Emission of Radiation
(C)Spontaneous Emission of Radio Waves
(D)Spontaneous Emission of Radiation
โ Correct Answer: Option B
(Stimulated Emission of Radiation)
๐ก Step-by-Step Explanation:
LASER stands for Light Amplification by Stimulated Emission of Radiation.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
English Language Comprehension
Question 108 of 200
(Without warning) it began to rain.
(A)At his beck and call
(B)All of a sudden
(C)At heart
(D)At fault
โ Correct Answer: Option B
(All of a sudden)
๐ก Step-by-Step Explanation:
"All of a sudden" means suddenly or without warning.
๐ท๏ธ PM&DC MDCAT โข 2021 (DUHS)
English Language Comprehension
Question 109 of 200
He is always (fighting) with his boss about something.
(A)As usual
(B)At last
(C)At odds
(D)At heart
โ Correct Answer: Option C
(At odds)
๐ก Step-by-Step Explanation:
"At odds" means in conflict or at variance; fighting or disagreeing.
๐ท๏ธ PM&DC MDCAT โข 2021 (PMDC Official)
Medical Sciences
Question 110 of 200
Which of the following cells in the gastric mucosa secrete hydrochloric acid (HCl) and intrinsic factor?
(A)Chief (zymogenic) cells
(B)Parietal (oxyntic) cells
(C)G cells
(D)Mucous neck cells
โ Correct Answer: Option B
(Parietal (oxyntic) cells)
๐ก Step-by-Step Explanation:
Parietal (oxyntic) cells in the fundus and body of the stomach secrete both hydrochloric acid and intrinsic factor essential for vitamin B12 absorption.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
Medical Sciences
Question 111 of 200
Which lung volume or capacity CANNOT be measured directly by standard spirometry?
(A)Vital capacity (VC)
(B)Residual volume (RV)
(C)Tidal volume (TV)
(D)Inspiratory reserve volume (IRV)
โ Correct Answer: Option B
(Residual volume (RV))
๐ก Step-by-Step Explanation:
Residual volume (RV), along with Functional Residual Capacity (FRC) and Total Lung Capacity (TLC), cannot be measured by spirometry because air remains in the lungs after maximal expiration.
๐ท๏ธ PM&DC MDCAT โข 2021 (SZABMU)
Medical Sciences
Question 112 of 200
Caseous necrosis with Langhans multinucleated giant cells and epithelioid histiocytes is characteristic of:
(A)Mycobacterium tuberculosis infection
(B)Acute pancreatitis
(C)Ischemic stroke
(D)Dry gangrene
โ Correct Answer: Option A
(Mycobacterium tuberculosis infection)
๐ก Step-by-Step Explanation:
Granulomatous inflammation featuring central 'cheesy' caseous necrosis and horseshoe-shaped arrangement of nuclei in Langhans giant cells is classic for tuberculosis.
๐ท๏ธ PM&DC MDCAT โข 2021 (KMU)
Medical Sciences
Question 113 of 200
In a patient presenting with high-grade fever and neck stiffness, CSF examination reveals turbid fluid, high opening pressure, elevated neutrophils (>1000/uL), high protein, and markedly decreased glucose. What is the most likely diagnosis?
(A)Viral (aseptic) meningitis
(B)Acute bacterial meningitis
(C)Cryptococcal meningitis
(D)Multiple sclerosis
โ Correct Answer: Option B
(Acute bacterial meningitis)
๐ก Step-by-Step Explanation:
Marked pleocytosis with neutrophil predominance, high protein, and a CSF-to-serum glucose ratio < 0.4 strongly signify acute purulent bacterial meningitis.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
Medical Sciences
Question 114 of 200
What is the primary etiology of Kwashiorkor in young children?
(A)Severe deficiency of total calories with adequate protein
(B)Severe dietary deficiency of protein despite adequate or marginal caloric intake
(C)Vitamin D deficiency
(D)Congenital enzyme defect
โ Correct Answer: Option B
(Severe dietary deficiency of protein despite adequate or marginal caloric intake)
๐ก Step-by-Step Explanation:
Kwashiorkor is characterized by severe protein malnutrition with bilateral pitting edema, distended abdomen, hepatomegaly ('flaky paint' dermatosis), contrasted with Marasmus (generalized calorie deprivation).
๐ท๏ธ PM&DC MDCAT โข 2021 (SZABMU)
Medical Sciences
Question 115 of 200
Painless, bright red vaginal bleeding occurring in the third trimester of pregnancy is the cardinal symptom of:
(A)Abruptio placentae
(B)Placenta previa
(C)Vasa previa
(D)Uterine rupture
โ Correct Answer: Option B
(Placenta previa)
๐ก Step-by-Step Explanation:
Placenta previa classically manifests as sudden, painless, recurrent bright red vaginal bleeding in the third trimester; digital vaginal examination is strictly contraindicated until ultrasound confirms placental location.
๐ท๏ธ PM&DC MDCAT โข 2021 (UHS)
Medical Sciences
Question 116 of 200
The Pentavalent vaccine in Pakistan's EPI schedule provides combined protection against which five infectious diseases?
(A)Polio, Measles, Rubella, Mumps, Tuberculosis
(B)Diphtheria, Pertussis, Tetanus, Hepatitis B, and Haemophilus influenzae type b (Hib)
โ Correct Answer: Option B
(Diphtheria, Pertussis, Tetanus, Hepatitis B, and Haemophilus influenzae type b (Hib))
๐ก Step-by-Step Explanation:
Pentavalent vaccine immunizes against Diphtheria, Pertussis (whooping cough), Tetanus, Hepatitis B, and Haemophilus influenzae type b (Hib), administered at 6, 10, and 14 weeks.
๐ท๏ธ PM&DC MDCAT โข 2021 (KMU)
Medical Sciences
Question 117 of 200
Which vector is responsible for the transmission of Dengue virus, Chikungunya, and Zika virus in Pakistan?
(A)Anopheles stephensi
(B)Aedes aegypti (and Aedes albopictus)
(C)Culex quinquefasciatus
(D)Phlebotomus sandfly
โ Correct Answer: Option B
(Aedes aegypti (and Aedes albopictus))
๐ก Step-by-Step Explanation:
Aedes mosquitoes (primarily Aedes aegypti) are day-biting vectors that breed in clean, artificial water collections and transmit Dengue, Yellow fever, Chikungunya, and Zika.
๐ท๏ธ PM&DC MDCAT โข 2020 (UHS)
General Knowledge
Question 118 of 200
What is the diameter of earth?
(A)11756 km
(B)12756 km
(C)13756 km
(D)14756 km
โ Correct Answer: Option B
(12756 km)
๐ก Step-by-Step Explanation:
The equatorial diameter of the Earth is approximately 12,756 kilometers, reflecting its slightly oblate shape.
๐ท๏ธ PM&DC MDCAT โข 2020 (PMDC Official)
General Knowledge
Question 119 of 200
Enzymes are substances that:
(A)They are soluble in water
(B)Convert complex organic substances into simpler molecules
(C)They produced by the ductless glands
(D)Resist the attack of viral diseases
โ Correct Answer: Option B
(Convert complex organic substances into simpler molecules)
๐ก Step-by-Step Explanation:
Enzymes are biological catalysts that speed up chemical reactions, such as breaking down complex nutrients during digestion.
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
General Knowledge
Question 120 of 200
The most abundant gas in the atmosphere is:
(A)Carbon Dioxide
(B)Helium
(C)Nitrogen
(D)Oxygen
โ Correct Answer: Option C
(Nitrogen)
๐ก Step-by-Step Explanation:
Nitrogen makes up approximately 78 percent of the Earth's atmosphere by volume.
๐ท๏ธ PM&DC MDCAT โข 2020 (PMDC Official)
General Knowledge
Question 121 of 200
In order to prevent the corrosion of iron pipes; they are often coated with a layer of zinc. This process is termed:
(A)Electroplating
(B)Annealing
(C)Galvanization
(D)Vulcanization
โ Correct Answer: Option C
(Galvanization)
๐ก Step-by-Step Explanation:
Galvanization is the process of applying a protective zinc coating to iron or steel to prevent rusting.
๐ท๏ธ PM&DC MDCAT โข 2020 (DUHS)
General Knowledge
Question 122 of 200
A gas, which is not present in normal samples of air, is:
(A)Neon
(B)Chlorine
(C)Carbon Dioxide
(D)Helium
โ Correct Answer: Option B
(Chlorine)
๐ก Step-by-Step Explanation:
Chlorine is a highly reactive gas not found naturally in the atmosphere; gases like neon, helium, and CO2 are trace components of air.
๐ท๏ธ PM&DC MDCAT โข 2020 (KMU)
General Knowledge
Question 123 of 200
What is the International Date Line?
(A)It is the equator
(B)It is the 0ยฐ longitude
(C)It is the 90ยฐ east longitude
(D)It is the 180ยฐ longitudes
โ Correct Answer: Option D
(It is the 180ยฐ longitudes)
๐ก Step-by-Step Explanation:
The International Date Line is an imaginary line located at roughly 180 degrees longitude that marks the start of a new calendar day.
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
General Knowledge
Question 124 of 200
What is the relationship between solar day and sidereal day?
(A)Both are equal
(B)Solar day is longer than sidereal day
(C)Solar day is shorter than sidereal day
(D)There is no relationship between the two
โ Correct Answer: Option B
(Solar day is longer than sidereal day)
๐ก Step-by-Step Explanation:
A solar day is approximately 4 minutes longer than a sidereal day because the Earth must rotate slightly more than 360 degrees to face the Sun again.
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
General Knowledge
Question 125 of 200
The most prominent gases in the atmosphere, in terms of volume, are:
(A)Nitrogen and Methane
(B)Nitrogen and Oxygen
(C)Oxygen and Carbon dioxide
(D)Hydrogen and Nitrogen
โ Correct Answer: Option B
(Nitrogen and Oxygen)
๐ก Step-by-Step Explanation:
Nitrogen (78%) and Oxygen (21%) together account for approximately 99 percent of the Earth's dry atmosphere by volume.
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
General Knowledge
Question 126 of 200
Fall in air temperature with increasing elevation is known as:
(A)Thermal Anomaly
(B)Thermal reduction
(C)Temperature Fall
(D)Lapse Rate
โ Correct Answer: Option D
(Lapse Rate)
๐ก Step-by-Step Explanation:
The lapse rate is the rate at which atmospheric temperature decreases with an increase in altitude.
๐ท๏ธ PM&DC MDCAT โข 2020 (PMDC Official)
General Knowledge
Question 127 of 200
Which Vitamin cannot be stored in human body?
(A)Vitamin A
(B)Vitamin B
(C)Vitamin C
(D)Vitamin D
โ Correct Answer: Option C
(Vitamin C)
๐ก Step-by-Step Explanation:
Vitamin C is water-soluble, meaning the body does not store it and excess amounts are excreted through urine.
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
General Knowledge
Question 128 of 200
Which countries are joined by the Palk Strait?
(A)India and Sri Lanka
(B)North and South Korea
(C)Pakistan and China
(D)Britain and France
โ Correct Answer: Option A
(India and Sri Lanka)
๐ก Step-by-Step Explanation:
The Palk Strait is a narrow strip of water between the Tamil Nadu state of India and the Mannar district of Sri Lanka.
๐ท๏ธ PM&DC MDCAT โข 2020 (UHS)
General Knowledge
Question 129 of 200
The gravitational force with which the sun attracts the earth:
(A)Is less than the force with which the earth attracts the sun
(B)Is the same as the force with which earth attracts the sun
(C)Is more than the force with which the earth attracts the sun
(D)Is constant throughout the year
โ Correct Answer: Option B
(Is the same as the force with which earth attracts the sun)
๐ก Step-by-Step Explanation:
According to Newton's Third Law, the gravitational forces between two bodies are equal in magnitude and opposite in direction.
๐ท๏ธ PM&DC MDCAT โข 2020 (PMDC Official)
General Knowledge
Question 130 of 200
Urdu Hindi controversy started first at Banaras in the year ________
(A)1865
(B)1866
(C)1867
(D)1868
โ Correct Answer: Option C
(1867)
๐ก Step-by-Step Explanation:
The Urdu-Hindi controversy began in 1867 when Hindus in Banaras demanded that Hindi replace Urdu as the official court language.
๐ท๏ธ PM&DC MDCAT โข 2020 (KMU)
General Knowledge
Question 131 of 200
'Lufthansa' is the name of airline of:
(A)Russia
(B)USA
(C)Malaysia
(D)Germany
โ Correct Answer: Option D
(Germany)
๐ก Step-by-Step Explanation:
Lufthansa is the flag carrier and largest airline of Germany.
๐ท๏ธ PM&DC MDCAT โข 2020 (KMU)
English Language Comprehension
Question 132 of 200
He is (not very good) when he tries to repair something in his house.
(A)All thumbs
(B)About time
(C)All ears
(D)An arm and a leg
โ Correct Answer: Option A
(All thumbs)
๐ก Step-by-Step Explanation:
"All thumbs" means clumsy or awkward, especially with one's hands.
๐ท๏ธ PM&DC MDCAT โข 2020 (KMU)
English Language Comprehension
Question 133 of 200
She is always (available) when he wants her.
(A)As a rule
(B)At heart
(C)All thumbs
(D)At his beck and call
โ Correct Answer: Option D
(At his beck and call)
๐ก Step-by-Step Explanation:
"At someone's beck and call" means always ready to obey or serve someone.
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
Medical Sciences
Question 134 of 200
Injury to the common peroneal (fibular) nerve at the fibular neck characteristically results in:
(A)Loss of plantar flexion (calcaneovalgus)
(B)Foot drop with loss of dorsiflexion and eversion
(C)Loss of sensation on the medial sole
(D)Weakness in knee extension
โ Correct Answer: Option B
(Foot drop with loss of dorsiflexion and eversion)
๐ก Step-by-Step Explanation:
The common peroneal nerve wraps around the neck of the fibula; damage impairs the anterior and lateral compartment leg muscles causing foot drop (loss of dorsiflexion) and high-stepping gait.
๐ท๏ธ PM&DC MDCAT โข 2020 (UHS)
Medical Sciences
Question 135 of 200
The functional unit of the kidney responsible for ultrafiltration and selective reabsorption is the:
(A)Glomerulus
(B)Nephron
(C)Renal pyramid
(D)Loop of Henle
โ Correct Answer: Option B
(Nephron)
๐ก Step-by-Step Explanation:
The nephron is the microscopic structural and functional unit of the kidney, consisting of a renal corpuscle and renal tubule system.
๐ท๏ธ PM&DC MDCAT โข 2020 (UHS)
Medical Sciences
Question 136 of 200
The foramen magnum, hypoglossal canal, and jugular foramen are anatomical apertures located in which cranial bone/region?
(A)Sphenoid bone
(B)Temporal bone
(C)Occipital bone / Posterior cranial fossa
(D)Ethmoid bone
โ Correct Answer: Option C
(Occipital bone / Posterior cranial fossa)
๐ก Step-by-Step Explanation:
The foramen magnum and hypoglossal canal are situated in the occipital bone within the posterior cranial fossa (the jugular foramen lies between the occipital and petrous temporal bones).
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
Medical Sciences
Question 137 of 200
Which of the following is an example of Type I (immediate) hypersensitivity reaction?
(A)Goodpasture syndrome
(B)Anaphylactic shock following penicillin administration
(C)Serum sickness
(D)Tuberculin skin test (Mantoux reaction)
โ Correct Answer: Option B
(Anaphylactic shock following penicillin administration)
๐ก Step-by-Step Explanation:
Type I hypersensitivity is mediated by IgE cross-linking on mast cells and basophils, resulting in immediate vasoactive amine release as observed in systemic anaphylaxis.
๐ท๏ธ PM&DC MDCAT โข 2020 (DUHS)
Medical Sciences
Question 138 of 200
Which mechanism underlies the antiplatelet effect of low-dose aspirin (75-100 mg/day)?
(A)Reversible inhibition of phosphodiesterase-3
(B)Irreversible acetylation and inhibition of cyclooxygenase-1 (COX-1), blocking Thromboxane A2
(C)Inhibition of ADP P2Y12 receptors
(D)Direct factor Xa inhibition
โ Correct Answer: Option B
(Irreversible acetylation and inhibition of cyclooxygenase-1 (COX-1), blocking Thromboxane A2)
๐ก Step-by-Step Explanation:
Aspirin irreversibly inhibits platelet COX-1, preventing the synthesis of thromboxane A2 (a potent platelet aggregator and vasoconstrictor) for the entire lifespan of the platelet.
๐ท๏ธ PM&DC MDCAT โข 2020 (DUHS)
Medical Sciences
Question 139 of 200
According to WHO growth standards and IMNCI guidelines, which physical measurement is used for community screening of severe acute malnutrition (SAM) in children aged 6-59 months?
(A)Head circumference < 40 cm
(B)Mid-upper arm circumference (MUAC) < 11.5 cm
(C)Chest circumference < 45 cm
(D)Abdominal girth < 35 cm
โ Correct Answer: Option B
(Mid-upper arm circumference (MUAC) < 11.5 cm)
๐ก Step-by-Step Explanation:
A MUAC of less than 11.5 cm (red zone on tri-colored tape) or the presence of bilateral pitting pedal edema diagnostic criteria for Severe Acute Malnutrition (SAM).
๐ท๏ธ PM&DC MDCAT โข 2020 (DUHS)
Medical Sciences
Question 140 of 200
What is the most frequent cause of massive primary postpartum hemorrhage (PPH) occurring within 24 hours of delivery?
(A)Cervical laceration
(B)Uterine atony
(C)Retained placenta fragments
(D)Coagulopathy
โ Correct Answer: Option B
(Uterine atony)
๐ก Step-by-Step Explanation:
Uterine atony (failure of the myometrium to contract and compress spiral arterioles) accounts for over 70-80% of all cases of primary postpartum hemorrhage.
๐ท๏ธ PM&DC MDCAT โข 2020 (DUHS)
Medical Sciences
Question 141 of 200
Which of the following describes 'Cold Chain' in public health practice?
(A)Storage of surgical instruments at low temperatures
(B)A system of storing and transporting vaccines within the recommended temperature range (+2ยฐC to +8ยฐC) from manufacturer to point of use
(C)Cryotherapy for malignant skin lesions
(D)Hypothermic cardiac preservation techniques
โ Correct Answer: Option B
(A system of storing and transporting vaccines within the recommended temperature range (+2ยฐC to +8ยฐC) from manufacturer to point of use)
๐ก Step-by-Step Explanation:
The vaccine cold chain is a continuous network of refrigerators, cold boxes, and icepacks ensuring potent vaccines are kept between +2ยฐC and +8ยฐC from factory to administration.
๐ท๏ธ PM&DC MDCAT โข 2020 (UHS)
Medical Sciences
Question 142 of 200
Which cell type in the islets of Langerhans secretes glucagon?
(A)Alpha cells
(B)Beta cells
(C)Delta cells
(D)F cells
โ Correct Answer: Option A
(Alpha cells)
๐ก Step-by-Step Explanation:
Alpha cells synthesize glucagon, Beta cells produce insulin, and Delta cells produce somatostatin.
๐ท๏ธ PM&DC MDCAT โข 2020 (SZABMU)
Medical Sciences
Question 143 of 200
The tricuspid valve is situated between which two chambers of the heart?
(A)Left atrium and left ventricle
(B)Right atrium and right ventricle
(C)Right ventricle and pulmonary trunk
(D)Left ventricle and aorta
โ Correct Answer: Option B
(Right atrium and right ventricle)
๐ก Step-by-Step Explanation:
The tricuspid atrioventricular valve guards the orifice between the right atrium and right ventricle.
๐ท๏ธ PM&DC MDCAT โข 2019 (UHS)
General Knowledge
Question 144 of 200
Which is the largest planet?
(A)Venus
(B)Earth
(C)Jupiter
(D)Mars
โ Correct Answer: Option C
(Jupiter)
๐ก Step-by-Step Explanation:
Jupiter is the fifth planet from the Sun and the largest planet in our solar system by both mass and volume.
๐ท๏ธ PM&DC MDCAT โข 2019 (DUHS)
General Knowledge
Question 145 of 200
A mass of ice originating in mountains in snowfields above the snowline is called:
(A)Mountain River
(B)Glaciers
(C)Lakes and water falls
(D)None of the above
โ Correct Answer: Option B
(Glaciers)
๐ก Step-by-Step Explanation:
Glaciers are large, persistent bodies of ice that form where the accumulation of snow exceeds its ablation over many years.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
General Knowledge
Question 146 of 200
Gasoline is obtained from crude oil by the process of:
(A)Evaporation
(B)Fractional Distillation
(C)Distillation
(D)Filtration
โ Correct Answer: Option B
(Fractional Distillation)
๐ก Step-by-Step Explanation:
Fractional distillation separates crude oil into different components, like gasoline, based on their different boiling points.
๐ท๏ธ PM&DC MDCAT โข 2019 (DUHS)
General Knowledge
Question 147 of 200
Chemically, baking soda is:
(A)Calcium Phosphate
(B)Sodium Bicarbonate
(C)Sodium Chloride
(D)Sodium Carbonate
โ Correct Answer: Option B
(Sodium Bicarbonate)
๐ก Step-by-Step Explanation:
Baking soda is a chemical leavening agent known as sodium bicarbonate, which releases carbon dioxide when reacting with acid.
๐ท๏ธ PM&DC MDCAT โข 2019 (UHS)
General Knowledge
Question 148 of 200
It is sometimes observed that if boiling water or milk is poured into a glass tumbler, it cracks. This is due to:
(A)Glass being easily heated
(B)Boiling liquid exerting greater pressure
(C)Glass being a bad conductor of heat
(D)Glass being non-metal in nature
โ Correct Answer: Option C
(Glass being a bad conductor of heat)
๐ก Step-by-Step Explanation:
The inner surface of the glass expands rapidly upon contact with heat, while the outer surface stays cool due to poor conduction, causing a crack.
๐ท๏ธ PM&DC MDCAT โข 2019 (UHS)
General Knowledge
Question 149 of 200
The main chemical substance present in the bones and teeth of animals is:
(A)Sodium Chloride
(B)Sugar
(C)Calcium Phosphate
(D)Calcium Sulphate
โ Correct Answer: Option C
(Calcium Phosphate)
๐ก Step-by-Step Explanation:
Hydroxyapatite, a form of calcium phosphate, is the primary mineral component that provides strength to bones and tooth enamel.
๐ท๏ธ PM&DC MDCAT โข 2019 (UHS)
General Knowledge
Question 150 of 200
Of the following, the content of carbon is minimum in:
(A)Steel
(B)Pig Iron
(C)Wrought Iron
(D)Cast Iron
โ Correct Answer: Option C
(Wrought Iron)
๐ก Step-by-Step Explanation:
Wrought iron is a highly purified form of iron with a very low carbon content, typically less than 0.08 percent.
๐ท๏ธ PM&DC MDCAT โข 2019 (UHS)
General Knowledge
Question 151 of 200
Acquired Immune-Deficiency Syndrome (AIDS) is caused by:
(A)Bacterium
(B)Protozoan
(C)Fungus
(D)Virus
โ Correct Answer: Option D
(Virus)
๐ก Step-by-Step Explanation:
AIDS is caused by the Human Immunodeficiency Virus (HIV), which attacks the body's immune system.
๐ท๏ธ PM&DC MDCAT โข 2019 (UHS)
General Knowledge
Question 152 of 200
On the surface of the moon, the:
(A)Mass and weight become less
(B)Mass remains constant and only the weight is less
(C)Both (a) & (b)
(D)None of these
โ Correct Answer: Option B
(Mass remains constant and only the weight is less)
๐ก Step-by-Step Explanation:
Mass is an intrinsic property of matter that does not change; weight decreases on the moon due to its weaker gravitational pull compared to Earth.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
General Knowledge
Question 153 of 200
The difference in the duration of day and night increases as one move from the ________ to the ________
(A)Equator, Poles
(B)Poles, Equator
(C)Tropic of Cancer, Equator
(D)Tropic of Cancer, Tropic of Capricorn
โ Correct Answer: Option A
(Equator, Poles)
๐ก Step-by-Step Explanation:
Variations in day length are minimal at the equator and become increasingly extreme as one moves toward the North or South Poles.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
General Knowledge
Question 154 of 200
Which of the following is wrong?
(A)The sun never shines vertically beyond the tropics
(B)At the poles there is light for half the year
(C)The sun shines vertically over the Tropic of Cancer at the time of the winter solstice
(D)When the sun shines vertically over the equator, it is called an equinox
โ Correct Answer: Option C
(The sun shines vertically over the Tropic of Cancer at the time of the winter solstice)
๐ก Step-by-Step Explanation:
The Sun shines vertically over the Tropic of Cancer during the summer solstice (June) in the Northern Hemisphere, not the winter solstice.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
General Knowledge
Question 155 of 200
The boundary between Germany and Poland is called the:
(A)Hindenburg Line
(B)Maginot Line
(C)Durand Line
(D)17th Parallel
โ Correct Answer: Option A
(Hindenburg Line)
๐ก Step-by-Step Explanation:
The Hindenburg Line was a defensive position built by Germany on the Western Front during World War I.
๐ท๏ธ PM&DC MDCAT โข 2019 (UHS)
General Knowledge
Question 156 of 200
In which year the Nobel Foundation was set up under the will of Alfred Bernhard Nobel?
(A)1900
(B)1901
(C)1866
(D)1899
โ Correct Answer: Option A
(1900)
๐ก Step-by-Step Explanation:
The Nobel Foundation was established as a private institution on June 29, 1900, to manage the finances and administration of the prizes.
๐ท๏ธ PM&DC MDCAT โข 2019 (SZABMU)
General Knowledge
Question 157 of 200
Who was the first Asian to have received the Nobel Prize?
(A)C.V. Raman
(B)R.N. Tagore
(C)Mother Teresa
(D)I.A. Bunin
โ Correct Answer: Option B
(R.N. Tagore)
๐ก Step-by-Step Explanation:
Rabindranath Tagore, an Indian polymath, won the Nobel Prize in Literature in 1913.
๐ท๏ธ PM&DC MDCAT โข 2019 (KMU)
General Knowledge
Question 158 of 200
Which of the following is not a UNO Agency?
(A)WMO
(B)ILO
(C)IMF
(D)IPU
โ Correct Answer: Option D
(IPU)
๐ก Step-by-Step Explanation:
The Inter-Parliamentary Union (IPU) is an international organization of national parliaments, not a specialized agency of the United Nations.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
English Language Comprehension
Question 159 of 200
He was (all ready) to leave the house when his friend came over.
(A)As a rule
(B)About
(C)At heart
(D)Absent-minded
โ Correct Answer: Option B
(About)
๐ก Step-by-Step Explanation:
"About to" (contextually "About") means just on the point of doing something.
๐ท๏ธ PM&DC MDCAT โข 2019 (DUHS)
English Language Comprehension
Question 160 of 200
The teacher said the little boy was (her favorite).
(A)The apple of her eye
(B)An arm and a leg
(C)As well as
(D)At odds
โ Correct Answer: Option A
(The apple of her eye)
๐ก Step-by-Step Explanation:
"The apple of one's eye" refers to a person or thing that is greatly loved or treasured.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
English Language Comprehension
Question 161 of 200
That car must have cost him (an incredibly large amount of money).
(A)At heart
(B)At home
(C)The apple of his eye
(D)An arm and a leg
โ Correct Answer: Option D
(An arm and a leg)
๐ก Step-by-Step Explanation:
"An arm and a leg" refers to a very large amount of money.
๐ท๏ธ PM&DC MDCAT โข 2019 (KMU)
Medical Sciences
Question 162 of 200
Which anatomical structure separates the anterior two-thirds of the tongue from the posterior one-third?
(A)Lingual frenulum
(B)Sulcus terminalis
(C)Circumvallate ridge
(D)Median lingual sulcus
โ Correct Answer: Option B
(Sulcus terminalis)
๐ก Step-by-Step Explanation:
The V-shaped groove called the sulcus terminalis marks the boundary between the embryonic anterior two-thirds (oral part) and posterior one-third (pharyngeal part) of the tongue.
๐ท๏ธ PM&DC MDCAT โข 2019 (DUHS)
Medical Sciences
Question 163 of 200
Which organism is the most common cause of uncomplicated urinary tract infections (UTIs) in ambulatory adult women?
(A)Klebsiella pneumoniae
(B)Escherichia coli (UPEC)
(C)Proteus mirabilis
(D)Pseudomonas aeruginosa
โ Correct Answer: Option B
(Escherichia coli (UPEC))
๐ก Step-by-Step Explanation:
Uropathogenic Escherichia coli (UPEC) accounts for approximately 75% to 85% of all uncomplicated acute community-acquired urinary tract infections.
๐ท๏ธ PM&DC MDCAT โข 2019 (DUHS)
Medical Sciences
Question 164 of 200
Which antimicrobial agent is famously associated with the 'Gray baby syndrome' due to inadequate hepatic glucuronidation in premature neonates?
(A)Chloramphenicol
(B)Tetracycline
(C)Gentamicin
(D)Sulfamethoxazole
โ Correct Answer: Option A
(Chloramphenicol)
๐ก Step-by-Step Explanation:
Chloramphenicol toxicity in neonates results from immature glucuronyl transferase enzyme and low renal excretion, leading to drug accumulation, circulatory collapse, cyanosis, and gray skin discoloration.
๐ท๏ธ PM&DC MDCAT โข 2019 (SZABMU)
Medical Sciences
Question 165 of 200
Which of the following triad of clinical features is classic for normal pressure hydrocephalus (NPH)?
(A)Fever, headache, stiff neck
(B)Gait disturbance ('magnetic gait'), urinary incontinence, and dementia
(C)Tremor, rigidity, bradykinesia
(D)Dysarthria, intention tremor, nystagmus
โ Correct Answer: Option B
(Gait disturbance ('magnetic gait'), urinary incontinence, and dementia)
๐ก Step-by-Step Explanation:
The classic Hakim-Adams triad of Normal Pressure Hydrocephalus consists of abnormal apraxic gait ('feet glued to the floor'), urinary incontinence, and progressive cognitive impairment.
๐ท๏ธ PM&DC MDCAT โข 2019 (DUHS)
Medical Sciences
Question 166 of 200
The drug of choice for the prevention and treatment of eclamptic convulsions in a severe pre-eclamptic pregnant woman is:
(A)Diazepam
(B)Magnesium sulfate (MgSO4)
(C)Phenytoin
(D)Sodium valproate
โ Correct Answer: Option B
(Magnesium sulfate (MgSO4))
๐ก Step-by-Step Explanation:
Intravenous/intramuscular Magnesium Sulfate (Pritchard or Zuspan regimen) is the universally recommended anticonvulsant for eclampsia prevention and management.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
Medical Sciences
Question 167 of 200
Tension pneumothorax is an immediate surgical emergency that requires urgent decompression prior to obtaining a chest radiograph by inserting a large-bore needle into the:
(A)5th intercostal space midclavicular line
(B)2nd intercostal space in the midclavicular line (or 4th/5th in anterior axillary line)
(C)7th intercostal space midscapular line
(D)Subxiphoid approach
โ Correct Answer: Option B
(2nd intercostal space in the midclavicular line (or 4th/5th in anterior axillary line))
๐ก Step-by-Step Explanation:
Immediate needle thoracocentesis (traditionally 2nd intercostal space midclavicular line, or 4th/5th intercostal space anterior axillary line) converts a tension pneumothorax into an open pneumothorax and relieves mediastinal shift.
๐ท๏ธ PM&DC MDCAT โข 2019 (SZABMU)
Medical Sciences
Question 168 of 200
A direct inguinal hernia is anatomically defined by protruding through which anatomical triangle bounded by the inferior epigastric vessels, rectus abdominis, and inguinal ligament?
(A)Femoral triangle
(B)Hesselbach triangle
(C)Scarpa triangle
(D)Calot triangle
โ Correct Answer: Option B
(Hesselbach triangle)
๐ก Step-by-Step Explanation:
Direct inguinal hernias push through a weakness in the posterior wall of the inguinal canal within Hesselbach's triangle, medial to the inferior epigastric vessels.
๐ท๏ธ PM&DC MDCAT โข 2019 (SZABMU)
Medical Sciences
Question 169 of 200
Under the Expanded Programme on Immunization (EPI) in Pakistan, which vaccine is administered at birth along with OPV-0 and Hepatitis B?
(A)Measles
(B)BCG (Bacille Calmette-Guรฉrin)
(C)Pentavalent
(D)PCV (Pneumococcal)
โ Correct Answer: Option B
(BCG (Bacille Calmette-Guรฉrin))
๐ก Step-by-Step Explanation:
At birth, infants in Pakistan receive BCG (intradermal, against tuberculosis), Oral Polio Vaccine (OPV-0), and the birth dose of Hepatitis B vaccine.
๐ท๏ธ PM&DC MDCAT โข 2019 (KMU)
Medical Sciences
Question 170 of 200
Maternal Mortality Ratio (MMR) is standardly defined in public health statistics as maternal deaths per how many live births?
(A)1,000 live births
(B)10,000 live births
(C)100,000 live births
(D)1,000,000 live births
โ Correct Answer: Option C
(100,000 live births)
๐ก Step-by-Step Explanation:
The Maternal Mortality Ratio is calculated as the number of resident maternal deaths resulting from the pregnancy process per 100,000 live births during a specified year.
๐ท๏ธ PM&DC MDCAT โข 2019 (PMDC Official)
Medical Sciences
Question 171 of 200
In Pakistan, the Lady Health Worker (LHW) Programme primarily operates at which level of the healthcare delivery system?
(A)Tertiary care hospitals
(B)Primary / Community grassroots level providing promotive and preventive maternal-child health services
(C)District headquarters specialized ICUs
(D)Private corporate diagnostic clinics
โ Correct Answer: Option B
(Primary / Community grassroots level providing promotive and preventive maternal-child health services)
๐ก Step-by-Step Explanation:
Initiated in 1994, Pakistan's Lady Health Workers operate at the grassroots primary community tier, providing basic maternal, child, family planning, and immunization outreach services.
๐ท๏ธ PM&DC MDCAT โข 2018 (PMDC Official)
General Knowledge
Question 172 of 200
Which one of the following planets has the maximum number of satellites?
(A)Jupiter
(B)Saturn
(C)Venus
(D)Uranus
โ Correct Answer: Option B
(Saturn)
๐ก Step-by-Step Explanation:
While Jupiter was historically cited, Saturn is recognized in the source as having the highest number of documented moons at the time.
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
General Knowledge
Question 173 of 200
How many satellites (moons) of Saturn planet?
(A)36
(B)56
(C)27
(D)23
โ Correct Answer: Option B
(56)
๐ก Step-by-Step Explanation:
This number reflects the count of Saturn's moons documented at the time the original source material was compiled.
๐ท๏ธ PM&DC MDCAT โข 2018 (DUHS)
General Knowledge
Question 174 of 200
Hard water does not lather well with soap because:
(A)It contains carbonates of calcium and magnesium
(B)It is highly coloured
(C)It contains suspended impurities
(D)It contains sodium chloride
โ Correct Answer: Option A
(It contains carbonates of calcium and magnesium)
๐ก Step-by-Step Explanation:
Dissolved calcium and magnesium ions in hard water react with soap to form insoluble curds rather than lather.
๐ท๏ธ PM&DC MDCAT โข 2018 (PMDC Official)
General Knowledge
Question 175 of 200
Water, on passing over rocks, becomes hard because it dissolves:
(A)Calcium Carbonate
(B)Sodium Chloride
(C)Sodium Carbonate
(D)Sodium Phosphate
โ Correct Answer: Option A
(Calcium Carbonate)
๐ก Step-by-Step Explanation:
As water flows over limestone or chalk, it dissolves calcium carbonate, which increases the mineral content and hardness of the water.
๐ท๏ธ PM&DC MDCAT โข 2018 (PMDC Official)
General Knowledge
Question 176 of 200
The process of changing of one element into another is called:
(A)Radioactive Decay
(B)Transmutation of the Elements
(C)Covalent Bond Formation
(D)Hybridization
โ Correct Answer: Option B
(Transmutation of the Elements)
๐ก Step-by-Step Explanation:
Transmutation is the conversion of one chemical element or isotope into another through nuclear reactions or decay.
๐ท๏ธ PM&DC MDCAT โข 2018 (SZABMU)
General Knowledge
Question 177 of 200
The ratio of different gases in air is:
(A)Unknown
(B)Fixed
(C)Different from place to place
(D)Independent of Industrialisation of town
โ Correct Answer: Option B
(Fixed)
๐ก Step-by-Step Explanation:
The primary composition of the Earth's atmosphere (nitrogen and oxygen) remains relatively constant across the globe.
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
General Knowledge
Question 178 of 200
Cooking oil can be converted into vegetable ghee by the process of:
(A)Hydrogenation
(B)Distillation
(C)Crystallisation
(D)Oxidation
โ Correct Answer: Option A
(Hydrogenation)
๐ก Step-by-Step Explanation:
Hydrogenation involves adding hydrogen to liquid vegetable oils to make them solid at room temperature, creating vegetable ghee.
๐ท๏ธ PM&DC MDCAT โข 2018 (PMDC Official)
General Knowledge
Question 179 of 200
Lack of ________ causes diabetes:
(A)Sugar
(B)Insulin
(C)Calcium
(D)Vitamins
โ Correct Answer: Option B
(Insulin)
๐ก Step-by-Step Explanation:
Diabetes is a metabolic disease characterized by high blood sugar levels resulting from the body's inability to produce or use insulin.
๐ท๏ธ PM&DC MDCAT โข 2018 (KMU)
General Knowledge
Question 180 of 200
The 'absolute zero of temperature' is:
(A)The starting point of any scale of temperature
(B)The lowest temperature that is theoretically possible
(C)The temperature at which the vapours of all liquid substances freeze
(D)The temperature at which all substances exist in the vapour phase
โ Correct Answer: Option B
(The lowest temperature that is theoretically possible)
๐ก Step-by-Step Explanation:
Absolute zero (0 Kelvin) is the theoretical temperature at which all molecular motion stops.
๐ท๏ธ PM&DC MDCAT โข 2018 (PMDC Official)
General Knowledge
Question 181 of 200
The earth is at its maximum distance from the sun on:
(A)July, 4
(B)January, 30
(C)September, 22
(D)December, 22
โ Correct Answer: Option A
(July, 4)
๐ก Step-by-Step Explanation:
Aphelion, the point where the Earth is furthest from the Sun, typically occurs around July 4th each year.
๐ท๏ธ PM&DC MDCAT โข 2018 (SZABMU)
General Knowledge
Question 182 of 200
Light from the nearest star reaches the earth in:
(A)4.3 seconds
(B)4.3 minutes
(C)43 minutes
(D)4.3 years
โ Correct Answer: Option D
(4.3 years)
๐ก Step-by-Step Explanation:
Proxima Centauri, the closest star to our solar system, is approximately 4.2 to 4.3 light-years away from Earth.
๐ท๏ธ PM&DC MDCAT โข 2018 (SZABMU)
General Knowledge
Question 183 of 200
Which comet appears every 76 years?
(A)Hailey's
(B)Holme's
(C)Donati's
(D)Alpha Centauri
โ Correct Answer: Option A
(Hailey's)
๐ก Step-by-Step Explanation:
Halley's Comet is a famous short-period comet that is visible from Earth approximately every 75 to 76 years.
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
General Knowledge
Question 184 of 200
A person planning to travel by the shortest route should follow:
(A)Winds
(B)Rivers
(C)Latitudes
(D)Longitudes
โ Correct Answer: Option D
(Longitudes)
๐ก Step-by-Step Explanation:
Traveling along great circle routes, which correspond to longitudes at the equator, represents the shortest distance between two points on a sphere.
๐ท๏ธ PM&DC MDCAT โข 2018 (SZABMU)
General Knowledge
Question 185 of 200
Most of the weather phenomena take place in the:
(A)Stratosphere
(B)Troposphere
(C)Tropopause
(D)Ionosphere
โ Correct Answer: Option B
(Troposphere)
๐ก Step-by-Step Explanation:
The troposphere is the lowest layer of the atmosphere where nearly all water vapor exists and weather conditions develop.
๐ท๏ธ PM&DC MDCAT โข 2018 (KMU)
General Knowledge
Question 186 of 200
In which year Mother Teresa was awarded Nobel Prize and for what?
(A)1981/Religion
(B)1979/Peace
(C)1980/Peach
(D)1979/Service to Humanity
โ Correct Answer: Option B
(1979/Peace)
๐ก Step-by-Step Explanation:
Mother Teresa was awarded the Nobel Peace Prize in 1979 for her humanitarian work with the poor in Calcutta.
๐ท๏ธ PM&DC MDCAT โข 2018 (KMU)
General Knowledge
Question 187 of 200
________ laid the foundation of National Muhammadan Association in 1877
(A)Sir Syed Ahmed Khan
(B)Syed Ameer Ali
(C)Sir Agha Khan
(D)None of these
โ Correct Answer: Option B
(Syed Ameer Ali)
๐ก Step-by-Step Explanation:
Syed Ameer Ali founded the Central National Muhammadan Association in Calcutta to advocate for the political rights of Indian Muslims.
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
General Knowledge
Question 188 of 200
The longest railway line is:
(A)Canadian-Pacific Railway
(B)Trans-Siberian Railway
(C)Indian Railway
(D)London Railway
โ Correct Answer: Option B
(Trans-Siberian Railway)
๐ก Step-by-Step Explanation:
The Trans-Siberian Railway connects Moscow with the Russian Far East and is the longest railway line in the world.
๐ท๏ธ PM&DC MDCAT โข 2018 (DUHS)
English Language Comprehension
Question 189 of 200
Okay I'm (listening). Please continue with your story.
(A)All ears
(B)All thumbs
(C)As a rule
(D)At heart
โ Correct Answer: Option A
(All ears)
๐ก Step-by-Step Explanation:
"All ears" means listening eagerly or attentively.
๐ท๏ธ PM&DC MDCAT โข 2018 (DUHS)
Medical Sciences
Question 190 of 200
In the cardiac conduction system, which structure possesses the fastest intrinsic rate of spontaneous action potential generation?
(A)Atrioventricular (AV) node
(B)Bundle of His
(C)Purkinje fibers
(D)Sinoatrial (SA) node
โ Correct Answer: Option D
(Sinoatrial (SA) node)
๐ก Step-by-Step Explanation:
The Sinoatrial (SA) node has the highest intrinsic pacing rate (60-100 bpm) and functions as the primary physiological pacemaker of the human heart.
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
Medical Sciences
Question 191 of 200
The primary blood supply to the head and neck of the femur, vulnerable to avascular necrosis following femoral neck fractures, is derived mainly from the:
(A)Medial circumflex femoral artery
(B)Lateral circumflex femoral artery
(C)Obturator artery
(D)Inferior gluteal artery
โ Correct Answer: Option A
(Medial circumflex femoral artery)
๐ก Step-by-Step Explanation:
The medial circumflex femoral artery provides the principal retinacular blood supply to the femoral head and neck; intracapsular fractures often disrupt these branches leading to avascular necrosis.
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
Medical Sciences
Question 192 of 200
Which factor shifting the oxyhemoglobin dissociation curve to the right increases oxygen unloading to tissues (Bohr effect)?
(A)Decreased temperature
(B)Increased blood pH (alkalosis)
(C)Increased PCO2, increased H+ (acidosis), and increased 2,3-BPG
(D)Decreased 2,3-BPG
โ Correct Answer: Option C
(Increased PCO2, increased H+ (acidosis), and increased 2,3-BPG)
๐ก Step-by-Step Explanation:
A rightward shift reduces hemoglobin's affinity for oxygen, facilitating oxygen release to metabolically active tissues; it is caused by increased PCO2, acidosis (low pH), hyperthermia, and elevated 2,3-BPG.
๐ท๏ธ PM&DC MDCAT โข 2018 (SZABMU)
Medical Sciences
Question 193 of 200
What is the normal glomerular filtration rate (GFR) in an average healthy young adult male?
(A)50-60 mL/min/1.73mยฒ
(B)90-120 mL/min/1.73mยฒ
(C)160-180 mL/min/1.73mยฒ
(D)200-220 mL/min/1.73mยฒ
โ Correct Answer: Option B
(90-120 mL/min/1.73mยฒ)
๐ก Step-by-Step Explanation:
Normal GFR in healthy adult males is approximately 120-125 mL/min/1.73mยฒ (about 90-120 mL/min for adult populations generally).
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
Medical Sciences
Question 194 of 200
Aldosterone, synthesized in the zona glomerulosa of the adrenal cortex, acts on renal distal tubules and collecting ducts primarily to:
(A)Excrete sodium and retain potassium
(B)Reabsorb sodium and water while secreting potassium and hydrogen ions
(C)Excrete calcium and retain phosphate
(D)Inhibit renin synthesis directly
โ Correct Answer: Option B
(Reabsorb sodium and water while secreting potassium and hydrogen ions)
๐ก Step-by-Step Explanation:
Aldosterone upregulates epithelial sodium channels (ENaC) and Na+/K+-ATPase pumps, promoting Na+ and water retention while stimulating K+ and H+ excretion.
๐ท๏ธ PM&DC MDCAT โข 2018 (KMU)
Medical Sciences
Question 195 of 200
Which laryngeal muscle is the sole abductor of the vocal cords?
(A)Lateral cricoarytenoid
(B)Posterior cricoarytenoid
(C)Cricothyroid
(D)Thyroarytenoid
โ Correct Answer: Option B
(Posterior cricoarytenoid)
๐ก Step-by-Step Explanation:
The posterior cricoarytenoid muscles are the only muscles that abduct (open) the vocal folds; bilateral injury to their nerve supply (recurrent laryngeal nerve) can cause life-threatening airway obstruction.
๐ท๏ธ PM&DC MDCAT โข 2018 (KMU)
Medical Sciences
Question 196 of 200
Reed-Sternberg cells with prominent owl-eye nucleoli are pathognomonic diagnostic microscopic features of:
(A)Burkitt lymphoma
(B)Hodgkin lymphoma
(C)Multiple myeloma
(D)Chronic lymphocytic leukemia
โ Correct Answer: Option B
(Hodgkin lymphoma)
๐ก Step-by-Step Explanation:
Classic binucleated or multinucleated giant cells with large inclusion-like eosinophilic nucleoli (Reed-Sternberg cells) are the hallmark of Hodgkin lymphoma.
๐ท๏ธ PM&DC MDCAT โข 2018 (PMDC Official)
Medical Sciences
Question 197 of 200
The Philadelphia chromosome, characterized by a t(9;22)(q34;q11) reciprocal translocation creating the BCR-ABL fusion oncoprotein, is most consistently detected in:
(A)Chronic Myeloid Leukemia (CML)
(B)Acute Promyelocytic Leukemia (APL)
(C)Follicular Lymphoma
(D)Multiple Myeloma
โ Correct Answer: Option A
(Chronic Myeloid Leukemia (CML))
๐ก Step-by-Step Explanation:
Over 95% of patients with Chronic Myeloid Leukemia harbor the Philadelphia chromosome (BCR-ABL tyrosine kinase gene fusion), targetable with imatinib.
๐ท๏ธ PM&DC MDCAT โข 2018 (KMU)
Medical Sciences
Question 198 of 200
What is the specific pharmacological antidote administered for acute paracetamol (acetaminophen) hepatotoxicity?
(A)Flumazenil
(B)N-acetylcysteine (NAC)
(C)Naloxone
(D)Deferoxamine
โ Correct Answer: Option B
(N-acetylcysteine (NAC))
๐ก Step-by-Step Explanation:
N-acetylcysteine (NAC) replenishes intracellular glutathione stores and detoxifies the reactive toxic metabolite NAPQI, preventing fatal hepatic necrosis.
๐ท๏ธ PM&DC MDCAT โข 2018 (DUHS)
Medical Sciences
Question 199 of 200
Which oral hypoglycemic agent decreases hepatic gluconeogenesis and is considered first-line pharmacotherapy for Type 2 Diabetes Mellitus?
(A)Glibenclamide
(B)Metformin
(C)Pioglitazone
(D)Sitagliptin
โ Correct Answer: Option B
(Metformin)
๐ก Step-by-Step Explanation:
Metformin (a biguanide) activates AMP-activated protein kinase (AMPK), inhibiting hepatic gluconeogenesis and improving peripheral insulin sensitivity without promoting hypoglycemia.
๐ท๏ธ PM&DC MDCAT โข 2018 (UHS)
Medical Sciences
Question 200 of 200
In which portion of the nephron does the majority (approx. 65-70%) of filtered water and sodium reabsorption occur?
(A)Distal convoluted tubule
(B)Proximal convoluted tubule (PCT)
(C)Medullary collecting duct
(D)Thick ascending loop of Henle
โ Correct Answer: Option B
(Proximal convoluted tubule (PCT))
๐ก Step-by-Step Explanation:
The proximal convoluted tubule is the primary site of solute and water reabsorption in the mammalian kidney.
No past paper questions match your filter.
Try selecting "All Subjects" or searching for a different keyword.
Master the most critical high-yield topic patterns frequently tested by Pakistan Medical & Dental Council (PM&DC) / Provincial Admitting Universities (UHS, SZABMU, DUHS, KMU):
Biology (68 MCQs): High-yield emphasis on Cell Structure, Genetics, Human Physiology, and Bioenergetics.
Chemistry (54 MCQs): Organic Chemistry reaction mechanisms, Chemical Equilibrium, and Stoichiometry calculations.
Physics (54 MCQs): Mechanics, Work & Energy, Electromagnetism, and Modern Physics key formulas.
Practice continuous 3.5-hour mock drills without mobile distractions to build physical test endurance.
โฑ๏ธ Official Timed Mock TestAnti-Cheat Proctored
Real examination simulation & ranking
MDCAT (Medical & Dental College Admission Test - PM&DC) Official Full-Length Mock Test
Simulate authentic exam conditions with real-time countdown, strict anti-cheating window monitors, weighted question distribution, and instant national leaderboard rankings.
โ Frequently Asked Questions (FAQs) - MDCAT (Medical & Dental College Admission Test - PM&DC)
MDCAT (Medical & Dental College Admission Test - PM&DC) stands for Medical & Dental College Admission Test (MDCAT). It is conducted by Pakistan Medical & Dental Council (PM&DC) / Provincial Admitting Universities (UHS, SZABMU, DUHS, KMU) for Mandatory Entrance Examination for MBBS & BDS Admissions in Public & Private Medical Colleges.
The examination comprises 200 Marks (200 MCQs: Biology 68, Chemistry 54, Physics 54, English 18, Logical Reasoning 6) to be completed within 210 Minutes (3 Hours 30 Minutes). The test pattern consists of standardized objective multiple-choice questions mapped according to official syllabus weightages. There is no negative marking (as per pmdc policy) for incorrect answers.
The prescribed passing benchmark is 55% for MBBS Admission Eligibility, 50% for BDS Admission Eligibility. However, final admission or interview shortlisting is determined based on competitive merit and aggregate rankings among all appearing candidates.
The official scorecard is valid for Valid for 3 Years (As per latest PMDC Regulations) from the official result declaration date.
Apex Rankers Academy provides 200+ verified most repeated past paper questions for MDCAT (Medical & Dental College Admission Test - PM&DC) with authentic paper session citations (2019โ2026), step-by-step mathematical proofs, and full-length timed mock tests with instant national ranking.
No Negative Marking (As per PMDC Policy). Candidates are advised to attempt all questions systematically within the allocated 210 Minutes (3 Hours 30 Minutes).