NUMS MDCAT PAST PAPERS 2023
| Subjects | Question Number Sequence |
|---|---|
| Physic | 1-40 |
| Biology | 41-95 |
| English | 96-110 |
| Chemistry | 111-150 |
- Isochore process: In a system where volume is kept constant, if 142 J heat is transferred to the system, what is the internal energy change when work is done?
A. 104
B. 116
C. 10684
D. 104 - The first law of thermodynamics is the generalization of which law?
A. Energy
B. Charge
C. Momentum
D. Work - While studying changes in a capacitor, the formula for capacitance is given by which constant?
A. Dielectric constant
B. Time constant
C. Proportionality constant
D. Electric constant - In parallel combination of two capacitors, their equivalent capacitance is equal to?
A. ( \frac{C_1 + C_2}{C_1} )
B. ( \frac{C_1 C_2}{C_1 + C_2} )
C. ( C_1 C_2 )
D. ( \frac{C_1 + C_2}{2} ) - The SI unit of capacitance of a capacitor is?
A. Coulomb
B. Volt
C. Farad
D. Ampere - 1 kWh = ?
A. ( 0.36 \times 10^3 )
B. ( 36 \times 10^3 )
C. ( 36 \times 10^6 )
D. ( 0.036 \times 10^5 ) - Volt × Ampere is the unit of?
A. Current
B. Voltage
C. Resistance
D. Power - If the area of a wire becomes two times its original value, what happens to its resistance?
A. Double
B. Remains the same
C. One-fourth
D. Decreases - A charged particle enters the magnetic field parallel, what will happen to it?
A. Deflect toward north
B. Deflect toward south
C. Move straight
D. Move in a circular path - The dimension of magnetic field strength is the same as that of?
A. Magnetic flux
B. Magnetic induction
C. Work done
D. Magnetic force - The weber is the unit of measure of?
A. Conductance
B. Electric current
C. Magnetic flux
D. Electric flux - Lenz’s law is also the statement of the law of conservation of?
A. Charge
B. Mass
C. Energy
D. Pressure - In Fleming’s right-hand rule, the second finger indicates?
A. Force
B. Magnetic field
C. Induced current
D. Motion - A current generator is a device that converts?
A. Mechanical energy into electrical energy
B. Chemical energy into mechanical energy
C. Sound energy into mechanical energy
D. Electrical energy into mechanical energy - A device that converts AC into DC is called?
A. Diode
B. Transistor
C. Capacitor
D. Inductor - The conversion of alternating current into direct current is called?
A. Amplification
B. Rectification
C. Magnification
D. Resolution - In full wave rectification, __ diodes are used.
A. 2
B. 4
C. 6
D. 3 - The time taken for half the number of atoms of a radioactive element to decay is called?
A. Average life
B. Mean life
C. Total life
D. Half-life - A 32g radioactive element decays and remains 2 after 60 days, what is the half-life of this radioactive element?
A. 2 days
B. 5 days
C. 10 days
D. 15 days - If the car is slowing down along the negative x-axis, then acceleration will be along?
A. Positive x-axis
B. Negative x-axis
C. Positive y-axis
D. Negative y-axis - The instantaneous velocity along the curved path is?
A. Along the tangent
B. Perpendicular to the slope
C. Parallel to the radius
D. Anti-parallel to the radius - In perfectly elastic collision:
A. Only momentum is conserved
B. Only total energy is conserved
C. Only kinetic energy is conserved
D. Momentum, kinetic energy, and total energy, all are conserved - The slope of a displacement-time graph is equal to?
A. Velocity
B. Displacement
C. Acceleration
D. Distance - The angle of inclination of a plane is same for the following pair of angles?
A. 60° and 20°
B. 75° and 15°
C. 50° and 25°
D. 45° and 30° - The product of force and time is equal to?
A. Angular momentum
B. Force
C. Change in momentum
D. Velocity - At what point during the projectile motion of a body is the object’s potential energy (PE) equal to its maximum?
A. Point of projection
B. Landing point
C. Highest point
D. Just before landing - Power is the dot product of?
A. Force and displacement
B. Force and time
C. Force and velocity
D. Work and time - The area under a force-displacement graph gives?
A. Displacement
B. Power
C. Work
D. Acceleration - A body of mass ‘m’ is moving with velocity ‘v’. After a short interval of time, its velocity becomes double. How many times will its K.E increase or decrease?
A. 2 times increased
B. 2 times decreased
C. 4 times increased
D. 4 times decreased - The relation between radian and degree is?
A. 1 rad = 57.3°
B. 1° = 57.3 rad
C. 1 rad = 1°
D. 1° = ( \frac{1}{57.3} ) rad - In the case of centripetal force, the value of instantaneous acceleration is given by?
A. ( a_c = \frac{v}{r} )
B. ( a_c = \frac{v^2}{r} )
C. ( a_c = \frac{r}{v} )
D. ( a_c = v^2 r ) - An electric motor turns at 400 revolutions per minute. Its angular velocity in rad/s will be?
A. ( 20 \pi )
B. ( 30 \pi )
C. ( 40 \pi )
D. ( 30 ) - A disc, a hoop, and a sphere are rolling down from an inclined plane simultaneously. Which object will reach the bottom first?
A. Hoop
B. Disc
C. Sphere
D. All at the same time - In the following figure, the wavelength is?
A. 2 m
B. 1.5 m
C. 1 m
D. 0.5 m - With an increase in pressure, the speed of sound will?
A. Increase
B. Decrease
C. First increase then decrease
D. Remain the same - In transverse waves, the portion above the mean level is called?
A. Wave front
B. Wave crest
C. Wave trough
D. Wavelength - The maximum displacement of particles of a medium, on either side of the mean position of a wave, is called?
A. Wavelength
B. Frequency
C. Amplitude
D. Crest - Which of the following is true for osmotic pressure?
A. It is higher in hypertonic solutions
B. It is lower in hypertonic solutions
C. It is unaffected by the nature of the solute
D. It decreases in dilute solutions - A plant cell placed in a hypertonic solution will?
A. Shrink
B. Swell
C. Remain the same
D. Burst - The role of lymphocytes in immunity is to?
A. Produce antibodies
B. Secrete enzymes
C. Carry oxygen
D. Perform phagocytosis - The solution of sodium chloride in water is an example of?
A. Hypertonic solution
B. Hypotonic solution
C. Isotonic solution
D. Aqueous solution - The hormone responsible for the initiation of labor is?
A. Oxytocin
B. Progesterone
C. Estrogen
D. LH - The primary function of the nervous system is to?
A. Process information
B. Provide structure to the body
C. Produce energy
D. Secrete hormones - The primary neurotransmitters in the nervous system include?
A. Dopamine
B. Serotonin
C. Acetylcholine
D. All of the above - Which part of the brain is responsible for regulating heart rate and breathing?
A. Cerebellum
B. Medulla Oblongata
C. Cerebrum
D. Hippocampus - The structure responsible for the production of sperm cells and male secondary sexual characteristics is?
A. Estrogen
B. Progesterone
C. Testosterone
D. Thyroxin - Leydig cells are responsible for?
A. Testosterone production
B. FSH production
C. Sperm production
D. Testosterone inhibition - The secretion of estrogen during oogenesis is stimulated by?
A. Luteinizing Hormone
B. Inhibin Hormone
C. Follicle Stimulating Hormone
D. Testosterone Hormone - Which of the following hormones regulate the menstrual cycle?
A. Follicle Stimulating Hormone and Estrogen
B. Luteinizing Hormone and Estrogen
C. Follicle Stimulating Hormone and Luteinizing Hormone
D. Estrogen and Progesterone - Which of the following traits is transmitted directly from an affected father to only his son?
A. Autosomal
B. X-linked
C. Y-linked
D. X-Y linked - When both the alleles of a gene pair are the same, the organism is said to be?
A. Heterozygous
B. Genotype
C. Homozygous
D. Phenotype - The theory that says that “mitochondria and chloroplasts are descendants of prokaryotes” is called?
A. Darwin’s theory of evolution
B. Lamarckism
C. Neo-darwinism
D. Endosymbiotic theory - Homologous organs are?
A. Organs that perform the same function but have different structures
B. Organs that perform different functions but have similar structures
C. Organs that perform similar functions and have similar structures
D. None of the above - Which of the following may NOT be a mode of action of an antibody?
A. Neutralizing an antigen
B. Precipitating an antigen
C. Secreting cytokines
D. Enhancing phagocytosis - Pepsinogen is converted into its active form pepsin by?
A. Proteolytic enzyme action
B. Dissolving in mucus
C. Hormonal action
D. Hydrochloric acid - Intrinsic factor is secreted by?
A. Pancreas
B. Liver
C. Stomach
D. Duodenum - The primary cells involved in developing immunity are?
A. Neutrophils
B. Lymphocytes
C. Thrombocytes
D. Erythrocytes - Digestion of which food component starts in the oral cavity?
A. Fats
B. Carbohydrates
C. Proteins
D. Vitamins - Vaccination is an example of?
A. Natural passive immunity
B. Natural active immunity
C. Acquired passive immunity
D. Acquired/Artificial active immunity - The heart’s origin is from the?
A. Left ventricle
B. Right ventricle
C. Left atrium
D. Right atrium - Which feature is absent from cardiac muscle cells?
A. Intercalated discs
B. Multinucleate cells
C. Light and dark bands
D. Contractile sarcomeres - Sarcoplasmic reticulum of muscle fibers is mainly responsible for?
A. Calcium storage
B. Protein synthesis
C. Lipid metabolism
D. Storing cell wastes - The junction between two neurons is called?
A. Impulse
B. Synapse
C. Axon
D. Cleft - Which hormone is chemically a steroid?
A. ADH
B. Thyroxin
C. Cortisone
D. Insulin - Underactivity of parathyroid glands causes a drop in blood levels of?
A. Mg²⁺
B. Na⁺
C. K⁺
D. Ca²⁺ - Which of the following proteins establishes the matrix of bone and cartilage?
A. Elastin
B. Keratin
C. Collagen
D. Histone - Non-competitive inhibitors react with enzymes at?
A. Allosteric site
B. Active site
C. Passive site
D. Regulatory site - Most enzymes work best at the following temperature?
A. 30°C
B. 40°C
C. 50°C
D. 20°C - In terms of enzyme action, ‘maximum temperature’ refers to a temperature at which?
A. Enzymes start to denature
B. Enzymes start to re-nature
C. Enzymes work best
D. Enzymes are reactivated - Blocking of the active site by similar shapes is referred to as?
A. Competitive inhibitors
B. Non-competitive inhibitors
C. Coenzymes
D. Activators - When light falls on P-700, which event is likely to occur?
A. It induces photolysis
B. Gains hydrogen
C. Accepts electrons
D. It is oxidized - Which of the following molecules are released after the completion of the light reaction and then utilized in the dark reaction of photosynthesis?
A. ATP and NADP⁺
B. ADP and NADP⁺
C. ADP and NADPH
D. ATP and NADPH - Which are the end products of the light reactions of photosynthesis?
A. ATP and NADPH
B. ATP and glucose
C. Glucose and NADP
D. ATP and water - Synthesis of ATP during photosynthesis takes place at the region?
A. Stroma
B. Thylakoid
C. Matrix
D. Cisternae - The complete, mature, and infectious virus particle is known as?
A. Venome
B. Genome
C. Virion
D. Capsid - All viruses are?
A. Autotrophs
B. Heterotrophs
C. Parasites
D. Predators - The structure that increases the pathogenicity of bacteria is?
A. Capsule
B. Cell wall
C. Slime
D. Cell membrane - The smallest known bacteria belong to the genus?
A. Mycoplasma
B. Streptococcus
C. Escherichia
D. Bacillus - Large, insoluble food particles are broken down by?
A. Stomach
B. Gall bladder
C. Small intestine
D. Colon - Secondary cell walls in plants are present in?
A. Primary cell wall
B. Secondary cell wall
C. Tertiary cell wall
D. Lignified cell walls - What distinguishes fungal cell walls from plant cell walls?
A. Fungal cell walls contain chitin
B. Fungal cell walls contain cellulose
C. Plant cell walls contain chitin
D. Plant cell walls contain silica - Pollination in plants is facilitated by?
A. Chloroplasts
B. Leucoplasts
C. Amyloplasts
D. Pollen grains - The tonoplast is the membrane separating?
A. Vacuole and Cytoplasm
B. Cytoplasm and Nucleoplasm
C. Vacuole and Stroma
D. Vacuole and Cytoplasm - Each centriole is composed of?
A. Two triplets of microtubules
B. Three triplets of microtubules
C. Five triplets of microtubules
D. Nine triplets of microtubules - The folds of the inner membrane of mitochondria are called?
A. Cristae
B. Mesosome
C. Infolds
D. Thylakoids - According to the fluid mosaic model of cell membranes, which zone is embedded inside?
A. Hydrophobic
B. Hydrophilic
C. Globular
D. Filamentous
- Which of the following is NOT a function of the smooth endoplasmic reticulum (SER)?
A. Metabolism of lipids
B. Transmission of impulses
C. Transport of materials
D. Synthesis of glycoproteins - Active and passive transport across the membrane of cells occurs through?
A. Lipids
B. Integral proteins
C. Charged pores
D. Carbohydrates - Lysosomes are spherical sacs, surrounded by a single membrane and contain?
A. Mitochondria
B. Golgi bodies
C. Lysosomal enzymes
D. Chloroplasts - The most abundant organic compound in mammalian cells is?
A. Water
B. Lipids
C. Carbohydrates
D. Proteins - Thermal stability of organisms in the environment is because of which characteristic of water?
A. Solvent property
B. Heat capacity
C. Ionization
D. Protection - The C-H bonds in lipids are important for?
A. Insulating material
B. Providing more energy
C. As exoskeleton
D. As cuticle of leaves - The sweetest carbohydrates among all are?
A. Monosaccharides
B. Disaccharides
C. Oligosaccharides
D. Polysaccharides - The study of the Earth’s atmosphere and weather is called?
A. Meteorology
B. Oceanography
C. Geophysics
D. Hydrology - The process by which green plants make food using sunlight is called?
A. Respiration
B. Transpiration
C. Photosynthesis
D. Fermentation - The production of glucose in plants occurs in which organelle?
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Endoplasmic Reticulum - The digestive enzyme amylase is secreted by?
A. Liver
B. Pancreas
C. Salivary glands
D. Stomach - The process by which a single cell divides into two identical cells is called?
A. Mitosis
B. Meiosis
C. Binary fission
D. Budding - The primary component of the cell membrane is?
A. Carbohydrates
B. Proteins
C. Phospholipids
D. Nucleic acids - The universal genetic code is written in the form of?
A. Codons
B. Ribosomes
C. RNA molecules
D. Polypeptides - The total energy possessed by an object in motion is called?
A. Kinetic energy
B. Potential energy
C. Mechanical energy
D. Thermal energy - The unit of electric charge is?
A. Coulomb
B. Ampere
C. Volt
D. Ohm - The mass of an object is measured in?
A. Kilograms
B. Meters
C. Joules
D. Newtons - Which of the following is NOT a vector quantity?
A. Velocity
B. Force
C. Speed
D. Acceleration - The frequency of a wave is defined as?
A. The distance between two successive crests
B. The number of complete waves passing a point per second
C. The maximum displacement of a wave
D. The time taken for one complete wave to pass - The principle of conservation of momentum applies to?
A. Elastic collisions
B. Inelastic collisions
C. Both elastic and inelastic collisions
D. Only elastic collisions in vacuum - The force of gravity on an object is called?
A. Weight
B. Mass
C. Density
D. Pressure - The power of a lens is measured in?
A. Joules
B. Watts
C. Diopters
D. Meters - In a vacuum, all electromagnetic waves travel at?
A. 3 x 10^8 m/s
B. 3 x 10^10 m/s
C. 3 x 10^6 m/s
D. 3 x 10^5 m/s - The wavelength of light is related to its?
A. Frequency
B. Amplitude
C. Energy
D. Intensity - The law of reflection states that?
A. The angle of incidence is equal to the angle of reflection
B. The angle of incidence is greater than the angle of reflection
C. The angle of incidence is half of the angle of reflection
D. The angle of reflection is twice the angle of incidence - The work done to move a charge between two points in an electric field is called?
A. Electric current
B. Voltage
C. Electrical resistance
D. Electric power - The unit of electrical resistance is?
A. Ampere
B. Volt
C. Ohm
D. Watt - In a parallel circuit, the total resistance is?
A. Equal to the sum of the individual resistances
B. Equal to the inverse of the sum of the reciprocals of the individual resistances
C. The same as the resistance of the largest resistor
D. The same as the resistance of the smallest resistor - The magnetic field around a current-carrying wire forms?
A. A straight line
B. A circle
C. A spiral
D. A rectangular loop - The electric field is strongest at?
A. The center of a charged sphere
B. The surface of a charged conductor
C. The midpoint between two equal charges
D. At infinity from the charge - The force between two charges is inversely proportional to?
A. The square of the distance between them
B. The square of the charge
C. The distance between them
D. The product of the charges - The voltage across a capacitor is directly proportional to?
A. The current through it
B. The time constant
C. The charge on it
D. The resistance in the circuit - The energy stored in a capacitor is given by the formula?
A. ( E = \frac{1}{2} C V^2 )
B. ( E = \frac{1}{2} C V )
C. ( E = C V^2 )
D. ( E = C V ) - The unit of electric field strength is?
A. Volt per meter
B. Newton per Coulomb
C. Coulomb per meter
D. Newton per meter - The frequency of an alternating current is measured in?
A. Joules
B. Hertz
C. Amperes
D. Volts - The energy of a photon is proportional to its?
A. Wavelength
B. Frequency
C. Amplitude
D. Intensity - The photoelectric effect demonstrates the particle nature of?
A. Light
B. Sound
C. Water waves
D. Electrons - The emission spectrum of hydrogen consists of?
A. Continuous spectrum
B. Discrete lines
C. Broad band
D. Wide spectrum - The Bohr model of the atom explains?
A. Electron orbits
B. Nuclear decay
C. Chemical bonding
D. Electrical conductivity - The de Broglie wavelength of a particle depends on its?
A. Mass and velocity
B. Frequency and amplitude
C. Charge and energy
D. Temperature and velocity - The energy required to remove an electron from an atom is called?
A. Ionization energy
B. Electron affinity
C. Binding energy
D. Excitation energy - The principle quantum number defines the?
A. Energy of an electron
B. Shape of an electron orbit
C. Orientation of an electron’s orbital
D. Spin of an electron - The uncertainty principle in quantum mechanics was proposed by?
A. Schrödinger
B. Heisenberg
C. Bohr
D. Einstein - Which of the following is a feature of an ionic bond?
A. Electrostatic attraction between oppositely charged ions
B. Sharing of electrons between atoms
C. Formation of a dipole
D. Overlapping of orbitals - The cracking method used to obtain better quality gasoline is?
A. Thermal
B. Catalytic
C. Steam
D. Radiations - Homocyclic organic compounds are subdivided into two types namely?
A. Alicyclic and Aromatic
B. Open chain and branched chain
C. Aromatic and non-aromatic
D. Antiaromatic and anti-alicyclic - Acetophenone can be formed by which of the following reactions of benzene?
A. Alkylation
B. Acylation
C. Halogenation
D. Nitration - The general formula of cycloalkanes is?
A. ( C_nH_{2n} )
B. ( C_nH_{2n+2} )
C. ( C_nH_{2n-2} )
D. ( C_nH_{2n-1} ) - Which of the following reactions differentiates alcohol from phenol?
A. Lucas test
B. Halogenation
C. Nitration
D. Iodine test - The order of reactivity of alcohol when the C-O bond breaks is?
A. Tertiary alcohol > secondary alcohol > primary alcohol
B. Secondary alcohol > primary alcohol > tertiary alcohol
C. Primary alcohol > secondary alcohol > tertiary alcohol
D. Tertiary alcohol > primary alcohol > secondary alcohol - C₆H₅COOH is the general formula of?
A. Ether
B. Carboxylic acid
C. Ketones
D. Carbaldehyde - Catalytic reduction of aldehydes and ketones forms?
A. Alcohol
B. Carboxylic acid
C. Aldehyde
D. Ketone - Which of the following reacts with carboxylic acids to form esters?
A. Aldehyde
B. Alkyl halide
C. Ketones
D. Alcohol - Hydrolysis of nitriles produces?
A. Carboxylic acid
B. Aldehydes
C. Ketones
D. Esters - What is the mass of sulfur in 245g of H₂SO₄?
A. 32g
B. 24g
C. 16g
D. 8g - How many moles of NH₃ are produced from 2.8 moles of N₂ and H₂?
A. 25 moles
B. 2 moles
C. 1 mole
D. 7.5 moles - The amount of energy associated with quantum radiation is?
A. Photon
B. Wavelength
C. Frequency
D. Velocity - The value of the azimuthal quantum number l will be?
A. 0, 1, 2
B. 0, 1, 2, 3
C. 1, 2, 3
D. 0, 1, 2, 3, 4 - The total number of directions of f-orbitals in space is?
A. 5
B. 3
C. 7
D. 6 - Which of the following quantum numbers is not obtained from Schrödinger’s equation?
A. Principal quantum number
B. Spin quantum number
C. Azimuthal quantum number
D. Magnetic quantum number - The electronic configuration for degenerate orbitals is explained by?
A. Aufbau principle
B. Hund’s rule
C. Pauli exclusion principle
D. Bohr’s model - The idea that molecules in gases are in constant movement is called?
A. Kinetic theory of gases
B. Crystal field theory
C. Molecular orbital theory
D. Transition state theory - The SI unit for pressure is?
A. mmHg
B. Pascal
C. Bar
D. Torr - If both temperature and volume of a gas are doubled, the pressure will?
A. Cannot be predicted
B. Is reduced to ¼
C. Remains unchanged
D. Is doubled
NUMS MDCAT Answer Key 2023
| 1. D | 2. A | 3. D | 4. A |
| 5. D | 6. B | 7. A | 8. D |
| 9. B | 10. B | 11. D | 12. B |
| 13. D | 14. A | 15. D | 16. B |
| 17. A | 18. D | 19. A | 20. A |
| 21. B | 22. B | 23. D | 24. D |
| 25. A | 26. B | 27. D | 28. A |
| 29. B | 30. D | 31. A | 32. B |
| 33. B | 34. D | 35. A | 36. A |
| 37. D | 38. B | 39. A | 40. D |
| 41. A | 42. A | 43. B | 44. B |
| 45. B | 46. D | 47. A | 48. A |
| 49. B | 50. D | 51. A | 52. B |
| 53. B | 54. A |
