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KMU MDCAT 2025 Past Paper (Paper D)

148 questionsKhyber Pakhtunkhwa26 Oct 2025All KMU papers →

Khyber Medical University, Peshawar

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Questions 1–6free, with explanations

1Biologyintrinsic factor absorption b12

Intrinsic factor secreted by parietal cells is essential for:

  1. A.Activation of pepsinogen to pepsin
  2. B.Absorption of vitamin B12 in the intestine
  3. C.Emulsification of dietary fats
  4. D.Neutralization of stomach acid in the duodenum

Explanation

Intrinsic factor binds vitamin B12 in the intestine and is required for its absorption in the ileum. The other options describe functions of other substances: pepsinogen activation requires pepsin/acid, emulsification is by bile salts, and neutralization in the duodenum is by pancreatic bicarbonate.

2Biologydelta cells somatostatin

The δ (delta) cells in the islets of Langerhans secrete:

  1. A.Insulin
  2. B.Somatostatin
  3. C.Glucagon
  4. D.Pancreatic polypeptide

Explanation

Delta cells secrete somatostatin, which inhibits secretion of both insulin and glucagon. Insulin is secreted by β-cells, glucagon by α-cells, and pancreatic polypeptide by PP cells.

3Biologyduodenum function

Identify the main function of duodenum:

  1. A.Bile storage
  2. B.Absorption of water
  3. C.Digestion of food
  4. D.Waste storage

Explanation

The duodenum is the principal site for the chemical digestion of chyme using pancreatic enzymes and bile. Bile is stored in the gallbladder (not duodenum), water absorption mainly occurs in the large intestine, and waste storage refers to the rectum.

4Biologyswallowing stage pharyngeal protection

Which stage of the swallowing process prevents food or liquid from being aspirated to the lungs?

  1. A.Oral
  2. B.Pharyngeal
  3. C.Oesophageal
  4. D.Peristalsis

Explanation

The pharyngeal stage closes the airway (via laryngeal elevation and epiglottis action) to prevent aspiration. The oral stage prepares the bolus, oesophageal stage moves it to the stomach, and peristalsis is the motility mechanism rather than the airway-protecting stage.

5Biologynephron types juxtamedullary

Which type of nephron is responsible for the development of osmotic gradients in the renal medulla?

  1. A.Glomerular
  2. B.Cortical
  3. C.Juxtamedullary
  4. D.Medullary

Explanation

Juxtamedullary nephrons have long loops of Henle that extend deep into the medulla and are essential for creating the medullary osmotic gradient used in urine concentration. Cortical nephrons have shorter loops and do not establish the gradient.

6Biologydistal convoluted tubule acid base

Which of the following describes how the distal convoluted tubule contributes to regulation of blood pH in the body?

  1. A.Selective reabsorption of Glucose
  2. B.Active secretion of hydrogen ions into the filtrate
  3. C.Active secretion of sodium from the glomerular filtrate
  4. D.Tubular reabsorption of potassium ions

Explanation

The distal convoluted tubule secretes hydrogen ions (and reabsorbs bicarbonate) to help regulate blood pH. Glucose reabsorption occurs primarily in the proximal tubule; the other options concern sodium/potassium handling but do not directly describe acid secretion for pH regulation.

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Questions 7148

7Biologyaldosterone activation sodium potassium pump

The sodium potassium pumps in the distal convoluted tubule are activated by:

  1. A.Aldosterone
  2. B.Antidiuretic hormone
  3. C.Anti-natriuretic peptide
  4. D.Renin

Answer and explanation locked

8Biologywater intake adh response

If a person drinks excessive amount of water, how does the kidney respond to maintaining osmoregulation?

  1. A.Increase ADH release and water reabsorption
  2. B.Increase aldosterone release and reabsorb more sodium
  3. C.Decrease renin secretion and retain more water
  4. D.Decrease ADH release and increase water excretion

Answer and explanation locked

9Biologyglomerular capillary filtration

The primary function of glomerular capillaries is:

  1. A.Reabsorption of water and solutes from the renal tubules
  2. B.Secretion of waste products from the blood into the tubules
  3. C.Filtration of blood from glomerular filtrate
  4. D.Supply of nutrients and oxygen to the kidney

Answer and explanation locked

10Biologyheat stroke hypothalamic response

In a heat stroke the hypothalamus will detect an increase in core body temperature, which of the following response is triggered

  1. A.Vasoconstriction and shivering
  2. B.Vasodilation and sweating
  3. C.Increased metabolic rate
  4. D.Release of thyroxin

Answer and explanation locked

11Biologynitrogenous waste solubility

Which nitrogenous waste has the lowest solubility in water?

  1. A.Urea
  2. B.Ammonia
  3. C.Uric acid
  4. D.Nitrite

Answer and explanation locked

12Biologyexcretory system classification

By nature, human excretory system is:

  1. A.Ammonotelic
  2. B.Uricotelic
  3. C.Ureotelic
  4. D.Aminotelic

Answer and explanation locked

13Biologyhyperparathyroidism kidney stones

Hyperparathyroidism may lead to the formation of:

  1. A.Calcium phosphate stones
  2. B.Uric acid stones
  3. C.Cystine stones
  4. D.Struvite stones

Answer and explanation locked

14Biologysomatic cell hybridization monoclonal production

In somatic cell hybridization, which two cells are fused to produce monoclonal antibodies?

  1. A.T-cells and nerve cells
  2. B.B-lymphocytes and spleen cells
  3. C.T-cells and liver cells
  4. D.B-lymphocytes and macrophages

Answer and explanation locked

15Biologydna rna probes molecular diagnostics

In molecular diagnostics, the primary function of DNA/RNA probes is to:

  1. A.Replace malfunctioning genes in effected cells
  2. B.Bind to specific DNA or RNA sequences for identification
  3. C.Cut genetic material at precise locations
  4. D.Stimulate immune responses against disease-causing organisms

Answer and explanation locked

16Biologymonoclonal antibodies definition

A set of uniform proteins generated by genetically identical immune cells (a clone) is called:

  1. A.Therapeutic proteins
  2. B.Immunoglobulins
  3. C.Monoclonal antibodies
  4. D.Recombinant proteins

Answer and explanation locked

17Biologygene therapy vector

Which biotechnological product is used to replace an abnormal gene in a patient's cells?

  1. A.Antibiotic
  2. B.Vaccine
  3. C.Vector
  4. D.Interferon

Answer and explanation locked

18Biologybase pairing cytosine guanine

In Watson and Crick's DNA model, which of the following pairs with Cytosine?

  1. A.Adenine
  2. B.Guanine
  3. C.Thymine
  4. D.Uracil

Answer and explanation locked

19Biologyfats as energy source

Fats are considered as a very efficient source of energy because they:

  1. A.Produce ATP directly and without requiring respiration
  2. B.Enter into glycolysis without any modification
  3. C.Are highly oxidized compounds
  4. D.Generate multiple acetyl groups that produce more ATP

Answer and explanation locked

20Biologysynapse definition

The junction between two consecutive neurons where information is transmitted from one neuron to the next is called:

  1. A.Node-of Ranvier
  2. B.Synapse
  3. C.Axon terminal
  4. D.Dendrite cleft

Answer and explanation locked

21Biologygolgi body functions

All of the following are the functions of Golgi bodies EXCEPT:

  1. A.Processing of protein
  2. B.Plasma membrane formation
  3. C.Cellular respiration
  4. D.Lysosome formation

Answer and explanation locked

22Biologyresting membrane ion distribution

Which ion is tenfold higher in concentration outside the membrane of neuron during resting potential?

  1. A.Potassium
  2. B.Sodium
  3. C.Calcium
  4. D.Hydrogen

Answer and explanation locked

23Biologymodes of hiv transmission

All of the following are the modes of transmission of AIDS, EXCEPT:

  1. A.Transfusion of infected blood
  2. B.Sharing infected needles
  3. C.Shaking hands with infected person
  4. D.Sexual contact with infected person

Answer and explanation locked

24Biologydetoxification organelles

Which organelle of the cell is involved in the detoxification of toxins and poisonous compounds?

  1. A.Lysosomes
  2. B.Smooth Endoplasmic Reticulum
  3. C.Ribosomes
  4. D.Mitochondria

Answer and explanation locked

25Biologyactive site role

The active site is important in enzyme action because:

  1. A.It binds to the substrate
  2. B.It maintains the pH of reaction
  3. C.It provides energy for reaction
  4. D.It changes the shape of the enzyme

Answer and explanation locked

26Biologylamarckism vs darwinism

The idea that acquired characters are inherited is part of:

  1. A.Darwinism
  2. B.Neo Darwinism
  3. C.Lamarckism
  4. D.Biogenesis

Answer and explanation locked

27Biologyenveloped virus diseases

Which disease is caused by enveloped virus?

  1. A.Leaf curl disease of cotton
  2. B.Flu
  3. C.Polio
  4. D.Hepatitis A

Answer and explanation locked

28Biologyglycoprotein location

The glycoproteins are commonly found in:

  1. A.Mitochondria
  2. B.Chloroplasts
  3. C.Ribosomes
  4. D.Plasma membrane

Answer and explanation locked

29Biologynucleus cytoplasm exchange

Which structure enables the exchange of material between nucleus and cytoplasm?

  1. A.Plasma membrane
  2. B.Nuclear pores
  3. C.Lysosomes
  4. D.Mitochondria

Answer and explanation locked

30Biologywater specific heat

The high specific heat capacity of water is due to:

  1. A.Ionic bonding
  2. B.Hydrogen bonding
  3. C.Covalent bonding
  4. D.Hydrophilic bonding

Answer and explanation locked

31Biologychromosome structure centromere

The contracted region of a chromosome that attaches to spindle fiber is called:

  1. A.Telomere
  2. B.Chromatin
  3. C.Centromere
  4. D.Nucleosomes

Answer and explanation locked

32Biologysensory vs motor neurons

Touching a sharp object stimulates pain receptors. This information is carried to the central nervous system by the:

  1. A.Motor-neuron
  2. B.Sensory neuron
  3. C.Associative neuron
  4. D.Effector neuron

Answer and explanation locked

33Biologyhaploid chromosome number

The number of chromosomes in a haploid cell are:

  1. A.Half the chromosomes in a normal body cell
  2. B.Double the chromosomes in a normal body cell
  3. C.Quarter the chromosomes in a normal body cell
  4. D.Equal to the chromosomes in a normal body cell

Answer and explanation locked

34Biologyanimal polysaccharides

Which of the following is a branched polysaccharide found in animals:

  1. A.Cellulose
  2. B.Glycogen
  3. C.Amylose
  4. D.Chitin

Answer and explanation locked

35Biologyenzyme inhibitors

A substance that binds to an enzyme, but NOT at the active site and reduces the enzyme activity is called:

  1. A.Competitive inhibitor
  2. B.Substrate
  3. C.Non-Competitive inhibitor
  4. D.Cofactor

Answer and explanation locked

36Biologyviral morphology influenza

On the basis of morphological classification, influenza virus is an example of:

  1. A.Helical capsid virus
  2. B.Polyhedral capsid virus
  3. C.Enveloped capsid virus
  4. D.Non-enveloped capsid virus

Answer and explanation locked

37Biologyglobular vs fibrous proteins

Which of the following is NOT a globular protein?

  1. A.Enzyme
  2. B.Albumin
  3. C.Hemoglobin
  4. D.Collagen

Answer and explanation locked

38Biologyneuronal resting state

The state, when a neuron is NOT conducting an impulse during resting membrane potential is called;

  1. A.Polarized
  2. B.Depolarized
  3. C.Repolarized
  4. D.Hyperpolarized

Answer and explanation locked

39Biologynerve impulse conduction

Which of the following waves travel along a neuron during nerve impulse conduction?

  1. A.Thermal waves
  2. B.Mechanical waves
  3. C.Electromagnetic waves
  4. D.Electrochemical waves

Answer and explanation locked

40Biologyreticular formation

The reticular formation in the brain runs through which structures?

  1. A.Forebrain and Midbrain
  2. B.Hindbrain and Midbrain
  3. C.Cerebellum and Forebrain
  4. D.Telencephalon and Cerebellum

Answer and explanation locked

41Biologyenzyme catalysis

Enzymes increase the rate of reaction by:

  1. A.Increasing activation energy
  2. B.Lowering activation energy
  3. C.Increasing pH
  4. D.Decreasing pH

Answer and explanation locked

42Biologycarbohydrate digestion and glycaemia

A diabetic patient is advised to avoid both sucrose and lactose, because they both:

  1. A.Are structural carbohydrates
  2. B.Increase blood glucose after hydrolysis
  3. C.Cannot be digested in human
  4. D.Act as non-caloric sweeteners

Answer and explanation locked

43Biologybrain regions and functions

Match the CORRECT structure of the brain with its function:

  1. A.Medulla: Breathing
  2. B.Pons: Memory
  3. C.Cerebellum: Dreaming
  4. D.Midbrain: Balance

Answer and explanation locked

44Biologycellular energy acquisition

Living cells Do NOT directly acquire energy released from the breakdown of food molecules because:

  1. A.Glucose cannot be broken down inside the cells
  2. B.Energy released is too small to be used by the cells
  3. C.Glucose molecules do not store any energy
  4. D.The energy released is too large, leading to heating and wastage

Answer and explanation locked

45Biologyproperties of water

Which properties of water enable it to circulate in living bodies and act as transport medium?

  1. A.Ionization and low density
  2. B.Cohesion and ionization
  3. C.Ionization and adhesion
  4. D.Adhesion and cohesion

Answer and explanation locked

46Biologylamarckism vs darwinism

A scientist cuts the tails of mice for several generations, but their offspring are always born with tails. This rejects:

  1. A.Darwinism
  2. B.Neo Darwinism
  3. C.Lamarckism
  4. D.Mutation theory

Answer and explanation locked

47Biologymembrane phospholipid arrangement

How are the phospholipid molecules arranged in the plasma membrane?

  1. A.Hydrophilic heads face inwards and hydrophobic tails face outwards
  2. B.Both Hydrophilic heads face each other in the membrane
  3. C.Hydrophilic heads face outwards and hydrophobic tails face inwards
  4. D.Hydrophilic heads and hydrophobic tails are randomly distributed

Answer and explanation locked

48Biologyrna structure

48. The structure of RNA consists of:

  1. A.Double polynucleotide strand
  2. B.Deoxyribose sugar
  3. C.Five different types of nucleotides
  4. D.Base pairing instead of thymine

Answer and explanation locked

49Biologymonosaccharide classification

50. Identify the CORRECT option that matches the sugar with its carbon number and functional group:

  1. A.Glyceraldehyde - Triose, Ketone group
  2. B.Ribose - Pentose, Aldehyde group
  3. C.Ribulose - Pentose, Aldehyde Group
  4. D.Galactose - Hexose, Ketone Group

Answer and explanation locked

50Biologyreflex arc sequence

51. The CORRECT sequence of events in a reflex arc is:

  1. A.Receptor, associative neuron, sensory neuron, motor neuron, effector
  2. B.Receptor, motor neuron, associative neurone, sensory neuron, effector
  3. C.Receptor, sensory neuron, associative neuron, motor neuron, effector
  4. D.Receptor, sensory neuron, motor neuron, associative neuron, effector

Answer and explanation locked

51Biologyfertilization site

52. Fertilisation normally occurs in the:

  1. A.Uterus
  2. B.Ovary
  3. C.Vagina
  4. D.Fallopian tubes

Answer and explanation locked

52Biologyfallopian tube epithelium

53. Which cells of the fallopian tube moisten and nourish the ovum?

  1. A.Ciliated epithelial cells
  2. B.Non ciliated epithelial cells
  3. C.Germ cells
  4. D.Endometrial cells

Answer and explanation locked

53Biologymale accessory glands

54. Which of the following is NOT the accessory gland of the male reproductive system?

  1. A.Bulbourethral gland
  2. B.Seminal vesicle
  3. C.Testes
  4. D.Prostate gland

Answer and explanation locked

54Biologysyphilis bacteria type

55. Syphilis is caused by what kind of bacteria:

  1. A.Spirochaete
  2. B.Cocci
  3. C.Bacillus
  4. D.Vibrio

Answer and explanation locked

55Biologycartilage characteristics

56. What is FALSE about cartilages?

  1. A.Cells are called chondrocytes
  2. B.Consist of Type II collagen
  3. C.Heal very slowly
  4. D.Have an extensive blood supply

Answer and explanation locked

56Biologybone composition

57. Bones provide a rigid framework with an inorganic matrix of:

  1. A.35%
  2. B.45%
  3. C.55%
  4. D.65%

Answer and explanation locked

57Biologybone remodeling cells

58. An important feature of bone remodeling is bone breakdown. Which cell carries out this function?

  1. A.Chondrocyte
  2. B.Osteocyte
  3. C.Osteoclast
  4. D.Osteoblast

Answer and explanation locked

58Biologymyofibril contractile unit

Myofibrils consist of small contractile units called___

  1. A.Sarcoplasm
  2. B.Sarcolemma
  3. C.Sarcomere
  4. D.Sarcoplasmic reticulum

Answer and explanation locked

59Biologymuscle types

Which muscle type is under conscious control and is multinucleated?

  1. A.Smooth muscle
  2. B.Skeletal muscle
  3. C.Cardiac muscle
  4. D.Ciliary muscle

Answer and explanation locked

60Biologysarcomere structure

Which part of the sarcomere contain both actin and myosin filament?

  1. A.I-band
  2. B.Z-line
  3. C.A-band
  4. D.H-zone

Answer and explanation locked

61Biologyexcitation contraction coupling

The primary role of calcium ions in muscle contraction is to:

  1. A.Produce energy
  2. B.Bind with troponin
  3. C.Carry nerve impulses
  4. D.Breakdown ATP

Answer and explanation locked

62Biologyjoints fibrous

Which of the following is an example of a fibrous joint?

  1. A.Shoulder joint
  2. B.Elbow joint
  3. C.Intervertebral discs
  4. D.Skull sutures

Answer and explanation locked

63Biologymendelian law dominance

Which of Mendel's laws can best explain why a child may inherit brown eyes even if one parent has blue eyes?

  1. A.Law of Dominance
  2. B.Law of Segregation
  3. C.Law of Independent Assortment
  4. D.Law of Recombination

Answer and explanation locked

64Biologydihybrid ratio

What is the significance of the 9:3:3:1ratio in a dihybrid cross?

  1. A.It proves that all genes are linked
  2. B.It demonstrates that traits assort independently
  3. C.It indicates co-dominance between alleles
  4. D.It confirms that mutations have occurred

Answer and explanation locked

65Biologymeiosis crossing over

In crossing over, an exchange of maternal and paternal chromatid parts occurs while homologous chromosomes are paired _____ stage of meiosis.

  1. A.Metaphase I
  2. B.Prophase I
  3. C.Anaphase II
  4. D.Telophase I

Answer and explanation locked

66Biologylinked genes

Linked genes DO NOT follow Mendel's Law of Independent Assortment because

  1. A.They are located on different chromosomes
  2. B.They always undergo crossing over
  3. C.They are physically close together on the same chromosome
  4. D.They rarely separate during meiosis

Answer and explanation locked

67Biologyx linked carrier

A carrier female for an X-linked recessive disorder:

  1. A.Expresses the disorder fully
  2. B.Cannot pass the disorder to her sons
  3. C.Can pass the disorder to her sons
  4. D.Only pases the disorder to her sons

Answer and explanation locked

68Biologyx linked disorders

Which of the following is an X-linked recessive disorder in humans?

  1. A.Cystic fibrosis
  2. B.Thalassemia
  3. C.Hemophilia
  4. D.Sickle cell anemia

Answer and explanation locked

69Biologyhemophilia inheritance

Which of the following CORRECTLY describes the expected outcome of children from a carrier mother for hemophilia (X^h X^h) and a normal father (X^Y)?

  1. A.All sons will have hemophilia
  2. B.All daughters will be carriers
  3. C.50% of sons will have hemophilia, and 50% of daughters will be carriers
  4. D.All offspring will be unaffected

Answer and explanation locked

70Biologyheart membranes

The heart is surrounded by a tough, inelastic double membranous covering called:

  1. A.Pleura
  2. B.Peritoneum
  3. C.Pericardium
  4. D.Meninges

Answer and explanation locked

71Biologycardiac cycle

Which phase of the cardiac cycle is characterized by the opening of semilunar valves?

  1. A.Atrial systole
  2. B.Atrial diastole
  3. C.Ventricular systole
  4. D.Ventricular diastole

Answer and explanation locked

72Biologycardiac conduction

Which part of the heart's conducting system delays the impulse from atria to the ventricles?

  1. A.Sino-atrial node
  2. B.Atrio-ventricular node
  3. C.Purkinje fibers
  4. D.Atrio-ventricular valves

Answer and explanation locked

73Biologyheart sounds

The heartbeat sound “LUB” is produced on closure of

  1. A.Aortic valve
  2. B.Atro-ventricular valves
  3. C.Pulmonary valves
  4. D.Semilunar valves

Answer and explanation locked

74Biologylymphatic function

What is the primary function of lymphatic vessels?

  1. A.Transport oxygenated blood
  2. B.Drain excess interstitial fluid
  3. C.Produce antibodies
  4. D.Store metabolic waste

Answer and explanation locked

75Biologyhelper t cells

The primary role of helper T cells in immune response is:

  1. A.Secreting perforins to destroy target cells
  2. B.Assisting B-cells and other T-cells in their function
  3. C.Inhibiting over activity of the immune system
  4. D.Engulfing and digesting pathogens

Answer and explanation locked

76Biologyinnate immune component

Identify the primary component of innate immune defense.

  1. A.Complement system and interferons
  2. B.Physical component of skin defense
  3. C.Specific recognition and memory of pathogens
  4. D.General inflammation and the site of infection

Answer and explanation locked

77Biologyinspiratory reserve volume

Which of the following best describes Inspiratory Reserve Volume (IRV)?

  1. A.The volume of air forcibly exhaled after normal tidal volume
  2. B.The volume of air remaining in the lungs after tidal
  3. C.The volume of air exchanged during normal breathing
  4. D.The volume of air forcibly inhaled after normal tidal volume

Answer and explanation locked

78Biologycarbonic anhydrase role

During gaseous exchange in human respiration, enzyme carbonic anhydrase is directly involved in the:

  1. A.Release of oxygen from hemoglobin
  2. B.Combination of water with carbon dioxide
  3. C.Breakdown of oxyhemoglobin
  4. D.Binding of oxygen to myoglobin

Answer and explanation locked

79Biologyintercostal muscles and inhalation

What happens when the external intercostal muscles contract during inhalation in humans?

  1. A.The rib cage compresses
  2. B.The ribs move outward
  3. C.The sternum moves inwards
  4. D.The diaphragm muscles relax

Answer and explanation locked

80Biologyeffects of smoking on respiratory system

The primary effect of smoking on the respiratory system:

  1. A.Increased lung function due to presence of nicotine
  2. B.Reduced risk of lung cancer due to tolerance
  3. C.Damage to alveoli reducing gaseous exchange
  4. D.Improves oxygenation of the blood by activating hemoglobin

Answer and explanation locked

81Physicslenz law

According to Lenz's Law, the direction of induced current in a conductor is such that it:

  1. A.Opposes the change in magnetic flux
  2. B.Enhances the change in magnetic flux
  3. C.Is perpendicular to the magnetic field
  4. D.Is parallel to the magnetic field

Answer and explanation locked

82Physicscapacitance ac circuit

In a pure capacitance AC circuit, the current:

  1. A.Lags behind voltage by 90°
  2. B.Leads the voltage by 90°
  3. C.Is in phase with the voltage
  4. D.Leads the voltage by 45°

Answer and explanation locked

83Physicsfull wave rectifier

In a full-wave rectifier using two diodes, the diodes:

  1. A.D1 and D2 operate:
  2. B.Simultaneously during both half-cycles
  3. C.In alternate switching mode
  4. D.Only when both ends of transformer are positive

Answer and explanation locked

84Physicsenergy of a quantum

The energy of a quantum is given by which equation?

  1. A.E = mc^2
  2. B.E = hf
  3. C.E = 1/2 mv^2
  4. D.E = qV

Answer and explanation locked

85Physicsbrackett series

In hydrogen spectrum, the Brackett series lies in

  1. A.Ultraviolet region
  2. B.Visible region
  3. C.Infrared region
  4. D.X ray region

Answer and explanation locked

86Physicsuniform acceleration

A car starts from rest and moves with a uniform acceleration of 3m/s^2. What will be its velocity after 5 seconds?

  1. A.8m/s
  2. B.12m/s
  3. C.15m/s
  4. D.18m/s

Answer and explanation locked

87Physicsinertia

A passenger standing in a stationary bus. When the bus suddenly starts moving forward, the passenger falls backward. Which phenomenon best explains this observation?

  1. A.Friction
  2. B.Gravity
  3. C.Inertia
  4. D.Deceleration

Answer and explanation locked

88Physicsmomentum conservation

A 0.02kg bullet moving at 300m/s embeds itself in a 2 kg block at rest on a smooth surface. What is the velocity of the block-bullet system just after impact?

  1. A.2m/s
  2. B.3m/s
  3. C.4m/s
  4. D.5m/s

Answer and explanation locked

89Physicsprojectile motion

Which of the following statement about projectile motion is CORRECT?

  1. A.The horizontal velocity of a projectile changes constantly due to gravity
  2. B.The vertical velocity of a projectile remains constant throughout the flight
  3. C.At the highest point, the vertical velocity of the projectile is zero, but the horizontal velocity remains unchanged
  4. D.The acceleration of the projectile is zero at the peak of its trajectory

Answer and explanation locked

90Physicsinstantaneous power

The rate of doing work at any instant of time is called:

  1. A.Work done
  2. B.Instantaneous power
  3. C.Average power
  4. D.Mechanical energy

Answer and explanation locked

91Physicspotential energy conversion

A 5kg body falls from the height of 30m towards the ground. All its potential energy is converted into heat on impact. What is the heat energy produced?

  1. A.1270J
  2. B.1370J
  3. C.1470J
  4. D.1570J

Answer and explanation locked

92Physicswork and power

Two students, A and B, each carry a 20kg load to the top of a long staircase. Student A takes 10sec, while student B takes 20sec. Which statement is CORRECT?

  1. A.Student A does more work than student B
  2. B.Student B uses more power than student A
  3. C.Both students do the same amount of work, but student A uses more power
  4. D.Student A and B use the same power since they lifted the same weight

Answer and explanation locked

93Physicsangular acceleration linear

A wheel of radius 0.4m has an angular acceleration of 1.2 rad/s^2. The linear acceleration is:

  1. A.1.2 m/s^2
  2. B.1.2 m/s
  3. C.2.4 m/s^2
  4. D.4 m/s^2

Answer and explanation locked

94Physicsangular velocity direction

If an object is moving anticlockwise along a circular path, in a horizontal plane on a page then the direction of its angular velocity is:

  1. A.Tangential to any point on the circle
  2. B.Towards centre of the circle
  3. C.Perpendicular to the plane and pointing out of the page
  4. D.Perpendicular to the plane and pointing into the page

Answer and explanation locked

95Physicsarc length formula

If a particle moves along a circular path of radius r with angular displacement θ (in radians), then the arc length s is given by:

  1. A.
  2. B.r/θ
  3. C.θ/r
  4. D.2πrθ

Answer and explanation locked

96Physicsdrag net force

A ball of weight Fg is falling vertically downward through air. If the drag force acting on it at some instant is Fd, what is the Fnet (net force) on the ball?

  1. A.Fg + Fd
  2. B.Fg - Fd
  3. C.Fd - Fg
  4. D.Fd/Fg

Answer and explanation locked

97Physicsturbulent flow

Most kinds of fluid flow are turbulent rather than laminar because of:

  1. A.Zero viscosity
  2. B.Very low velocities
  3. C.High velocities
  4. D.No resistance

Answer and explanation locked

98Physicscontinuity equation

According to law of continuity, when the cross-sectional area of a pipe decreases, the fluid velocity:

  1. A.Increases
  2. B.Decreases
  3. C.Remains the same
  4. D.Becomes zero

Answer and explanation locked

99Physicsbernoulli pressure

Water flows steadily through a pipe that gradually narrows. At the wider end, the velocity of water is 1m/s, at the narrower end, the velocity is 3m/s. Which statement is CORRECT about the pressure in the narrower end compared to the wider end?

  1. A.Pressure is lower at the narrow end because velocity is higher
  2. B.Pressure is higher at the narrow end because velocity is higher
  3. C.Pressure is the same at both ends since flow is continuous
  4. D.Pressure is independent of velocity of water

Answer and explanation locked

100Physicswave motion condition

What is the necessary condition of a wave motion?

  1. A.The medium must be elastic
  2. B.The medium must be inelastic
  3. C.The particles of the medium must be independent of each other
  4. D.The particles of the medium must not be dependent on each other

Answer and explanation locked

101Physicsprogressive wave

A progressive wave is one which:

  1. A.Does not vibrate the medium
  2. B.Carries energy across the medium
  3. C.Propagates only through air
  4. D.Requires a denser medium for propagation

Answer and explanation locked

102Physicsspeed of sound dependence

Speed of sound in air increases with:

  1. A.Higher temperature, higher humidity
  2. B.Lower temperature, lower humidity
  3. C.Higher pressure at constant temperature
  4. D.Higher density at constant elasticity

Answer and explanation locked

103Physicswavelength change

A wave has velocity 300m/s and frequency 100Hz. If the medium is changed so that velocity doubles but frequency remains constant, the new wavelength will be:

  1. A.Halved
  2. B.Doubled
  3. C.Same
  4. D.Zero

Answer and explanation locked

104Physicsshm kinetic energy

When a particle executing simple harmonic motion moves from the mean position to the extreme position, its kinetic energy:

  1. A.Increases continuously
  2. B.Decreases continuously and becomes zero at the extreme position
  3. C.Remains constant throughout the motion
  4. D.Becomes maximum at the extreme position

Answer and explanation locked

105Physicsheat flow direction

Heat will spontaneously flow from:

  1. A.Lower to higher internal energy only
  2. B.High pressure to low pressure
  3. C.High to low temperature
  4. D.Low temperature to high temperature

Answer and explanation locked

106Chemistrycp minus cv

At a constant Pressure (Cp) and Volume (Cv), an ideal gas has C p - C v = R Then Cp will be?

  1. A.R/2
  2. B.3/2 R
  3. C.5/2 R
  4. D.7/2 R

Answer and explanation locked

107Physicsdefinition of electric field

The electric field at a point is defined as:

  1. A.Potential per unit charge
  2. B.Work done per unit time
  3. C.Charge per unit area
  4. D.Force per unit positive test charge

Answer and explanation locked

108Physicscoulombs law relation

Coulomb's law fits well into:

  1. A.Newton's 1st law
  2. B.Newton's 2nd law
  3. C.Newton's 3rd law
  4. D.Gauss's law

Answer and explanation locked

109Physicselectric potential difference

The work done in moving a unit positive charge from one point to another while keeping the charge in electrostatic equilibrium is called:

  1. A.Kinetic energy
  2. B.Potential energy
  3. C.Elastic potential energy
  4. D.Potential difference

Answer and explanation locked

110Physicspower dependence on voltage

If the potential difference (V) across a conductor is doubled, keeping resistance (R) constant, the power dissipated (P) becomes:

  1. A.Doubled
  2. B.Halved
  3. C.Four times
  4. D.Remains unchanged

Answer and explanation locked

111Chemistryfree radical chlorination

Consider the chlorination of methane to methyl chloride, the attack of chlorine free radical on methane, occurs in which phase?

  1. A.Before initiation
  2. B.Initiation
  3. C.Propagation
  4. D.Termination

Answer and explanation locked

112Biologypancreatic carboxypeptidase

A patient with pancreatic insufficiency shows reduced activity of an enzyme that hydrolyzes the first peptide bond at the carboxyl end of proteins and peptides. Which enzyme is deficient?

  1. A.Elastase
  2. B.Pepsin
  3. C.Carboxypeptidase
  4. D.Collagenase

Answer and explanation locked

113Chemistryelectrolytic cell anode

In an electrolytic cell when the current passes through a solution, the anode is:

  1. A.a positive electrode where oxidation occurs
  2. B.a negative electrode where oxidation occurs
  3. C.a negative electrode where reduction occurs
  4. D.a positive electrode where reduction occurs

Answer and explanation locked

114Chemistryinternal energy effects

An increase in the internal energy of a chemical system can lead to all EXCEPT:

  1. A.An increase in temperature due to rise in kinetic energy of molecules
  2. B.A phase change such as melting or evaporation
  3. C.A chemical reaction if energy supplied is sufficient to break bonds
  4. D.An increase in temperature due to drop in kinetic energy of molecules

Answer and explanation locked

115Chemistrysp2 hybridization in ethene

In ethene molecule, each carbon atom has three hybridized sp2 orbitals which are:

  1. A.Coplanar
  2. B.Tetrahedral
  3. C.Linear
  4. D.Pyramidal

Answer and explanation locked

116Chemistryberyllium oxidation beo layer

Which of the following best explains the reaction between Beryllium (Be) and Oxygen (O)?

  1. A.Be burns vigorously with oxygen forming a layer of BeO, which accelerates the oxidation of remaining metal
  2. B.Be reacts with oxygen forming a layer of BeO, which protects the metal from further oxidation
  3. C.Be reacts slowly with oxygen to form a volatile oxide BeO, which evaporates quickly
  4. D.Be is the only alkaline earth metal that doesn't react with oxygen

Answer and explanation locked

117Chemistrygas constant value

The value of R in atm.dm3.mol-1.K-1 is:

  1. A.0.0821
  2. B.0.821
  3. C.62.4
  4. D.8.314

Answer and explanation locked

118Chemistryfactors affecting rate

The rate of a chemical reaction changes with:

  1. A.Concentration of reactant molecules
  2. B.Concentration of product molecules
  3. C.Concentration of both reactant and product
  4. D.Rate constant

Answer and explanation locked

119Chemistryplanck hf dependence

According to Planck's quantum theory, if the frequency of photon is doubled, the value of hf will be:

  1. A.Doubled
  2. B.Increased 3 times
  3. C.Increased 4 times
  4. D.Unchanged

Answer and explanation locked

120Chemistryrate constant dependence

The specific rate constant (k) of a reaction is related to the concentration of reactants:

  1. A.Directly
  2. B.Inversely
  3. C.Exponentially
  4. D.Independently

Answer and explanation locked

121Biologyprotein secondary structure

An experiment shows that heating a 'protein' disrupts the alpha helix structure. Which protein structure is mainly affected?

  1. A.Primary structure
  2. B.Secondary structure
  3. C.Tertiary structure
  4. D.Quaternary structure

Answer and explanation locked

122Chemistrykinetic molecular theory

Which of the following is NOT a postulate of kinetic molecular theory of gases?

  1. A.Gas molecules undergo elastic collision
  2. B.Gas molecules are in continuous random motion
  3. C.Gas molecules do not exert pressure when molecules collide with wall of container
  4. D.Gas molecules are far away from each other

Answer and explanation locked

123Chemistryspectral series hydrogen

Spectral series for hydrogen spectrum are :

  1. A.2
  2. B.3
  3. C.4
  4. D.5

Answer and explanation locked

124Chemistrymost electronegative element

The most electronegative element in periodic table is:

  1. A.F
  2. B.Cl
  3. C.N
  4. D.O

Answer and explanation locked

125Chemistryeffect of temperature on ΔH positive reaction

If ΔH for a reaction is positive, then by decreasing temperature, the reaction will

  1. A.Move forward
  2. B.Move in reverse
  3. C.Have no effect
  4. D.Be both forward and reverse

Answer and explanation locked

126Chemistryhydration of propene

The addition of water to propene in the presence of sulfuric acid produces:

  1. A.Propane
  2. B.Propan-2-ol
  3. C.Butanol
  4. D.Ethanol

Answer and explanation locked

127Chemistrysp2 hybridization examples

In which of the following molecules does the central atom use sp2 hybridization?

  1. A.PH3
  2. B.NH3
  3. C.BH3
  4. D.SbH3

Answer and explanation locked

128Chemistryphenol carbon hybridization

In a molecule of phenol, the carbon atom which is attached to -OH group is:

  1. A.sp hybridized
  2. B.sp2 hybridized
  3. C.sp3 hybridized
  4. D.unhybridized

Answer and explanation locked

129Chemistryplanar molecule example

Which one of the following is a planar molecule?

  1. A.NH3
  2. B.H2O
  3. C.BF3
  4. D.CH4

Answer and explanation locked

130Chemistrybond energy comparison

Which of the following has highest bond energy?

  1. A.HCl
  2. B.HI
  3. C.HF
  4. D.HBr

Answer and explanation locked

131Englishgerund phrase function

In the sentence "Jogging every morning improves my mood," what role does the gerund phrase play?

  1. A.Object of a verb
  2. B.Direct object
  3. C.Predicative noun
  4. D.Subject

Answer and explanation locked

132Englishprepositions time expressions

The meeting has been scheduled ___ 3 p.m. sharp.

  1. A.on
  2. B.at
  3. C.in
  4. D.to

Answer and explanation locked

133Englishtransitional device

"She studied hard; ______, she passed the exam with distinction." Choose the CORRECT transitional device:

  1. A.however
  2. B.for instance
  3. C.consequently
  4. D.in contrast

Answer and explanation locked

134Englishpassive voice usage

She completed the task with great difficulty. Identify the CORRECT usage of passive voice.

  1. A.The task was completed with great difficulty by her.
  2. B.The task has been completed with great difficulty by her.
  3. C.The task was been completed with great difficulty by her.
  4. D.The task was being completed with great difficulty by her.

Answer and explanation locked

135Englishsubject verb agreement

Each of the boys ______ ambitious to lead the team.

  1. A.have
  2. B.has
  3. C.is
  4. D.are

Answer and explanation locked

136Englishfigurative language

"Revenge is a kind of wild justice." The sentence illustrates the use of:

  1. A.Personification
  2. B.Pun
  3. C.Metaphor
  4. D.Hyperbole

Answer and explanation locked

137Englishvocabulary meaning

The old man was feeble, barely able to walk. The word 'feeble' means:

  1. A.Healthy
  2. B.Weak
  3. C.Strong
  4. D.Fat

Answer and explanation locked

138Englishliterary devices

Which literary device involves using words or phrases that convey the opposite of their literal meaning?

  1. A.Irony
  2. B.Parody
  3. C.Satire
  4. D.Sarcasm

Answer and explanation locked

139Englishpossessive pronoun

All of the players forgot ____ jerseys.

  1. A.his
  2. B.her
  3. C.them
  4. D.their

Answer and explanation locked

140Logical Reasoninghalving dosing

A medication dose starts at 100mg and halves each day. What will be the dose on day 4?

  1. A.12.5mg
  2. B.25mg
  3. C.30mg
  4. D.50mg

Answer and explanation locked

141Logical Reasoningequalizing books shelf

A library has 4 books on Shelf A, and 8 books on Shelf B. Some books are removed from Shelf B such that both shelves now have exactly the same number of books. How many books were removed from Shelf B?

  1. A.1
  2. B.2
  3. C.3
  4. D.4

Answer and explanation locked

142Logical Reasoningrank problem

Ahmed ranks 10th in the class of 46 students. There are only 7 students below Bilal rank wise. How many students are there between Ahmed and Bilal?

  1. A.27
  2. B.28
  3. C.30
  4. D.32

Answer and explanation locked

143Logical Reasoningfamily relationship

How is Ali related to Mustafa? If Ali says, "Mustafa's mother is the only child of my grandmother."

  1. A.Brother
  2. B.Cousin
  3. C.Uncle
  4. D.Father

Answer and explanation locked

144Logical Reasoningdata privacy moral argument

A mobile company is deciding whether to collect personal user data for improving advertisement. Which of the following is a moral argument against collecting the data?

  1. A.Users may lose trust in the company, which could hurt profits.
  2. B.It is wrong to collect data without users' clear and informed consent.
  3. C.Competitors already collect more data, and we need to stay competitive.
  4. D.More data means more accurate advertising, which boosts sales.

Answer and explanation locked

145Logical Reasoningage algebra

A father is 5 years older than twice his son's age. If the son is 12, what is the father's age?

  1. A.28 years
  2. B.29 years
  3. C.30 years
  4. D.32 years

Answer and explanation locked

146Logical Reasoningmissing number sequence

Which number comes in the missing place? 200, 180, 162, 146, 132, _____

  1. A.118
  2. B.120
  3. C.122
  4. D.126

Answer and explanation locked

147Logical Reasoningweight empty boxes

If 5 boxes of soap weigh 75 kilos and each box when empty weighs 3 kilos. What is total weight of the soaps?

  1. A.15
  2. B.30
  3. C.45
  4. D.60

Answer and explanation locked

148Logical Reasoninggeometric sequence halving

Consider the sequence: 64, 32, 16, 8, ... What is the 10th term of this sequence?

  1. A.2
  2. B.4
  3. C.1/4
  4. D.1/8

Answer and explanation locked