NUMS MDCAT PAST PAPERS 2022

Q1. Which organelle would be more abundant in the secretory cell than the non-secretory cell?

  • a) Lysosome
  • b) Golgi complex
  • c) Vacuole
  • d) Centrioles

Q2. The structure which disappeared during cell division is:

  • a) Vacuole
  • b) Lysosome
  • c) Nucleus
  • d) Endoplasmic reticulum

Q3. The enzyme ATP synthase is located on the membrane of the organelle:

  • a) Nucleus
  • b) Mitochondria
  • c) Lysosome
  • d) Vacuole

Q4. Which of the following is correct for the cell wall?

  • a) Semi-permeable
  • b) Differentially permeable
  • c) Permeable
  • d) Not permeable

Q5. Why is the plasma membrane said to be asymmetrical?

  • a) Proteins are not fixed at their position
  • b) Hydrophobic tail facing inward and hydrophilic head facing outward
  • c) The two surfaces and halves are not identical
  • d) None of the above

Q6. The following part is common in both the digestive system and respiratory systems of human beings:

  • a) Trachea
  • b) Pharynx
  • c) Larynx
  • d) Oesophagus

Q7. Heartbeat is normally regulated by:

  • a) Purkinje fibers
  • b) AV bundle
  • c) Sinoatrial node
  • d) Bundle of His

Q8. The method which helps in developing immunity against bacteria is:

  • a) Radiotherapy
  • b) Chemotherapy
  • c) Vaccination
  • d) Antibiotics

Q9. Normal gestation period in humans is about — days:

  • a) 300-320
  • b) 270-280
  • c) 240-250
  • d) 300-320

Q10. During the menstrual cycle, after the female gamete is released from the ovary in ovulation, the remains of the follicle secrete:

  • a) Progesterone
  • b) FSH
  • c) LH
  • d) Testosterone

Q11. In the male reproductive system, the hormone involved in the regulation of the rate of spermatogenesis is called:

  • a) Luteinizing hormone
  • b) Follicle-stimulating hormone
  • c) Testosterone
  • d) Inhibin

Q12. Cervix is the part of:

  • a) Vagina
  • b) Oviduct
  • c) Uterus
  • d) Ovary

Q13. Which of the following is most abundant in the human body?

  • a) Fibrous
  • b) Hyaline
  • c) Elastic
  • d) Flexible

Q14. Which of the following is an example of a joint called suture?

  • a) Skull bone
  • b) Costal cartilage
  • c) Pubic symphysis
  • d) Intervertebral disc

Q15. Which event does not occur during muscle contraction?

  • a) I-band shortens
  • b) A-band shortens
  • c) H-zone disappears
  • d) Z-lines move closer

Q16. Smooth muscles are long and spindle-shaped with nucleus per cell:

  • a) One
  • b) Two
  • c) Three
  • d) Many

Q17. Blood group which is known as a universal donor is:

  • a) A
  • b) AB
  • c) O
  • d) AB+

Q18. Which one can be considered as living characteristic of a virus?

  • a) Can be crystallized
  • b) No cellular respiration
  • c) Mutate their genetic material
  • d) Lack biosynthetic machinery

Q19. A group of organisms with similar morphology and physiology, which can breed together to produce fertile offspring is called:

  • a) Species
  • b) Domain
  • c) Kingdom
  • d) Diversity

Q20. In the presence of oxygen, the complete breakdown of glucose produces — ATP molecules in prokaryotes:

  • a) 20
  • b) 36
  • c) 38
  • d) 40

Q21. What are the products of light-dependent reactions of photosynthesis?

  • a) ATP, RuBP, and reduced NAD
  • b) ATP, oxygen, and reduced NADP
  • c) GP, oxygen, and reduced NAD
  • d) GP, reduced NADP, and RuBP

Q22. In the process of photosynthesis, water acts as:

  • a) Proton acceptor
  • b) Electron donor
  • c) CO2 reducer
  • d) CO2 accepter

Q23. During photosynthesis, CO2 works as:

  • a) Proton donor
  • b) Electron donor
  • c) Proton acceptor
  • d) Source of O2

Q24. End product of Calvin cycle is:

  • a) 3-phosphoglycerate
  • b) 1,3-biphosphoglycerate
  • c) Glyceraldehyde-3-phosphate
  • d) Glucose

Q25. Which of the following molecules contains amino acids?

  • a) Cellulose
  • b) Collagen
  • c) Sucrose
  • d) Ascorbic acid

Q26. Hydrolysis is the breakdown of polymer into its monomers by the addition of:

  • a) Hydroxyl group
  • b) Hydrogen
  • c) Water
  • d) Nitrogen

Q27. Which of the following is not a carbohydrate?

  • a) Glucose (C6H12O6)
  • b) Sucrose (C12H22O11)
  • c) Rhamnose (C6H12O5)
  • d) Lactic acid (C3H6O3)

Q28. Due to its high heat of vaporization, water plays an important role in living organisms as:

  • a) Being an excellent solvent
  • b) Cooling agent
  • c) Membrane stabilizer
  • d) Thermal shock resistor

Q29. Which molecules do not contribute to the formation of biological membranes?

  • a) Glycoproteins
  • b) Lipids
  • c) Phospholipids
  • d) Nucleoproteins

Q30. Which of the following molecules would yield glucose and fructose on hydrolysis?

  • a) Starch
  • b) Maltose
  • c) Sucrose
  • d) Lactose

Q31. The terminal ends of the chromosomes are:

  • a) Satellite
  • b) Kinetochore
  • c) Nucleolar organizer
  • d) Telomere

Q32. The gap between neurons at a synapse is:

  • a) Synaptic knob
  • b) Synaptic cleft
  • c) Synaptic delay
  • d) Synaptic vesicle

Q33. The part of the brain which controls the body temperature in human beings is called:

  • a) Thalamus
  • b) Hypothalamus
  • c) Pons
  • d) Cerebellum

Q34. A long extension of a nerve cell is called:

  • a) Axon
  • b) Auxin
  • c) Schwann cell
  • d) Dendrites

Q35. Which is a steroid hormone?

  • a) Cortisone
  • b) Adrenaline
  • c) Insulin
  • d) Thyroxin

Q36. The molecules responsible for conveying messages from one neuron to the next are called:

  • a) Hormones
  • b) Activators
  • c) Neurotransmitters
  • d) Enzymes

Q37. Which enzyme works in alkaline pH?

  • a) Pepsin
  • b) Sucrose
  • c) Enterokinase
  • d) Pancreatic lipase

Q38. Considering enzyme action, the minimum temperature is the term used when:

  • a) Enzymes start denaturing
  • b) Enzyme becomes hyperactive
  • c) Enzyme works at their best
  • d) Inactive enzyme gets reactivated

Q39. Which option is correct about non-competitive inhibition?

  • a) Malonate acts as an inhibitor
  • b) Enzyme shape distorted
  • c) Competition for active site
  • d) Inactive enzyme gets reactivated

Q40. Which type of enzyme would be most active in your gut after eating a loaf of bread?

  • a) Amylase
  • b) Trypsin
  • c) Lactase
  • d) Carboxypeptidase

Q41. He presented the theory of “origin of species by means of natural selection”:

  • a) Lamarck
  • b) Linnaeus
  • c) Hardy-Weinberg
  • d) Darwin

Q42. Which is not a mode of action of an antibody?

  • a) Precipitating an antigen
  • b) Neutralizing an antigen
  • c) Secreting cytokines
  • d) Enhancing phagocytosis

Q43. Magnesium is an important nutrient in plants for the formation of:

  • a) Proteins
  • b) Lipids
  • c) Chlorophylls
  • d) Enzymes

Q44. Which of the following parts of the respiratory system has no cartilage?

  • a) Larynx
  • b) Trachea
  • c) Bronchioles
  • d) Bronchi

Q45. Enzymatic portion of the gastric juices is secreted by which mucosal cells?

  • a) Oxyntic cells
  • b) Chief cells
  • c) Mucus cells
  • d) Endocrine cells

Q46. The horizontal distance travelled by a wave during one complete cycle is called:

  • a) Frequency
  • b) Wavelength
  • c) Amplitude
  • d) Time period

Q47. If the period of oscillation of a man (M) suspended from a spring is 1s, then the period of 16M will be:

  • a) 1s
  • b) 2s
  • c) 3s
  • d) 4s

Q48. Loudness of the sound is directly related to:

  • a) Intensity of sound
  • b) Frequency of sound
  • c) Wavelength of sound
  • d) Pitch of sound

Q49. The increase in the speed of sound in air for each degree rise above 0°C is:

  • a) 0.40 m/s
  • b) 0.51 m/s
  • c) 0.81 m/s
  • d) 0.61 m/s

Q50. First law of thermodynamics is based on:

  • a) Law of conservation of momentum
  • b) Law of conservation of mass
  • c) Law of conservation of charge
  • d) Law of conservation of energy

Q51. The thermodynamic process during which the pressure is kept constant is called:

  • a) Isochoric process
  • b) Adiabatic process
  • c) Isobaric process
  • d) Isothermal process

Q52. Energy stored in a capacitor is given by:

  • a) E = ½ C V²
  • b) E = 2 C V²
  • c) E = C V²
  • d) E = 2 C V

Q53. Electric field intensity is:

  • a) Force per unit mass
  • b) Force per unit tesla
  • c) Force per unit charge
  • d) Force per unit watt

Q54. It stores electrical potential energy:

  • a) Capacitor
  • b) Conductor
  • c) Inductor
  • d) Generator

Q55. A magnitude of the current in metals is proportional to the applied voltage as long as the temperature of the conductor is kept constant. It is a statement of:

  • a) Joule’s law
  • b) Gauss’s law
  • c) Ohm’s law
  • d) Ampere’s law

Q56. The resistance of pure metal increases with:

  • a) Increase in temperature
  • b) Increase in pressure
  • c) Decrease in temperature
  • d) Decrease in pressure

Q57. The magnetic field inside the current-carrying wire varies:

  • a) Inversely with r
  • b) Inversely with r²
  • c) Directly with r
  • d) Directly with r²

Q58. Magnetic flux is maximum when the angle between magnetic field and vector area is:

  • a) 0°
  • b) 90°
  • c) 30°
  • d) 45°

Q59. Lenz’s law is based on the law of conservation of:

  • a) Mass
  • b) Energy
  • c) Charge
  • d) Momentum

Q60. In Fleming’s right-hand rule, the thumb indicates:

  • a) Force
  • b) Magnetic field
  • c) Induced current
  • d) Electric field

Q61. Transformer works on the principle of:

  • a) Half-wave rectification
  • b) Self-Induction
  • c) Mutual Induction
  • d) Full-wave rectification

Q62. A device that converts AC into DC is called:

  • a) Diode
  • b) Transistor
  • c) Capacitor
  • d) Inductor

Q63. The conversion of alternating current into direct current is called:

  • a) Amplification
  • b) Rectification
  • c) Magnification
  • d) Resolution

Q64. 1 Gy is equal to:

  • a) 1 J/kg
  • b) 1 J·kg⁻¹
  • c) 1 J·kg
  • d) J·kg⁻¹

Q65. A 32g radioactive element decays and remains 2g after 60 days. What is the half-life of the radioactive element?

  • a) 2 days
  • b) 6 days
  • c) 10 days
  • d) 15 days

Q66. An elastic collision is the one in which:

  • a) Kinetic energy and momentum are conserved
  • b) Kinetic energy is conserved but total energy is not conserved
  • c) Momentum is conserved but kinetic energy is not conserved
  • d) Both kinetic energy and momentum are not conserved

Q67. The time rate of change of velocity is called:

  • a) Force
  • b) Acceleration
  • c) Power
  • d) Energy

Q68. In projectile motion, the range of the projectile will be maximum at an angle of:

  • a) 30 degrees
  • b) 45 degrees
  • c) 60 degrees
  • d) 90 degrees

Q69. Which of the following is NOT TRUE?

  • a) Action and reaction have the same nature
  • b) Action and reaction have the same line of action
  • c) Action and reaction never act on the same body
  • d) Action and reaction can cancel each other

Q70. Two buses moving at 100 km/h and 80 km/h respectively cross each other while moving in opposite directions. Velocity of one bus relative to the other bus is:

  • a) 100 km/h
  • b) 20 km/h
  • c) 80 km/h
  • d) 180 km/h

Q71. Which of the following pair of angles have the same range for a projectile?

  • a) 10° and 20°
  • b) 75° and 15°
  • c) 45° and 60°
  • d) 0° and 30°

Q72. The angle of projection of a projectile for which its maximum height and horizontal range are equal is:

  • a) 45°
  • b) 30°
  • c) 60°
  • d) 90°

Q73. The explosion of explosive material is an application of:

  • a) Law of conservation of energy
  • b) Law of conservation of mass
  • c) Law of conservation of momentum
  • d) Newton’s third law of motion

Q74. 1 hp is equal to:

  • a) 476 watts
  • b) 647 watts
  • c) 746 watts
  • d) 467 watts

Q75. The product of force and velocity is equal to:

  • a) Kinetic energy
  • b) Potential energy
  • c) Power
  • d) Work done

Q76. One kilowatt-hour is equal to:

  • a) 3.6 MJ
  • b) 36 KJ
  • c) 36 KJ
  • d) None of the above

Q77. The amount of work done in moving a body at a certain point in a gravitational field to a position of zero potential such that the body is never accelerated is called:

  • a) Kinetic energy
  • b) Potential energy
  • c) Gravitational potential energy
  • d) Absolute potential energy

Q78. If the speed of a body is doubled, its kinetic energy becomes:

  • a) 2mv²
  • b) mv²
  • c) 4mv²
  • d) mv

Q79. An electric motor of power 2hp is installed in an industrial unit. Its power is:

  • a) 1500W
  • b) 742W
  • c) 148W
  • d) 1492W

Q80. 1 radian =

  • a) 5.7°
  • b) 73.5°
  • c) 57.3°
  • d) 37.5°

Q81. The minimum required velocity to put a satellite into the orbit is called:

  • a) Terminal velocity
  • b) Escape velocity
  • c) Critical velocity
  • d) Average velocity

Q82. A rotating wheel completes 12 revolutions in 4 seconds. Find the average angular velocity in rad/sec:

  • a) 24.6 rad/s
  • b) 16.8 rad/s
  • c) 10.4 rad/s
  • d) 18.8 rad/s

Q83. When an object experiences circular motion, the direction of centripetal acceleration is:

  • a) Towards center
  • b) Along tangent
  • c) Along the direction of motion
  • d) Opposite of the direction of motion

Q84. The crest of a wave acts as:

  • a) Concave lens
  • b) Convex lens
  • c) Convex mirror
  • d) Plane mirror

Q85. The speed of sound in air does not depend on:

  • a) Density of medium
  • b) Pressure
  • c) Temperature
  • d) Moisture

Q86. Choose the correct option:

  • a) He had no worries, his pension was adequate, and there was a little money saved up besides.
  • b) He had no worries his pension was adequate and there was a little money saved up besides.
  • c) He had no worries; his pension was adequate, and there was a little money saved up besides.
  • d) He had no worries; his pension was adequate and there was a little money saved up besides.

Q87. Identify the errors and choose the correct option:

  • a) There’s Mr. Hashim whom they say is the best portrait painter in the town.
  • b) There’s Mr. Hashim who they say is the best portrait painter in the town.
  • c) There’s Mr. Hashim which they say is the best portrait painter in the town.
  • d) There’s Mr. Hashim who they say is the best portrait painter in the town.

Q88. A full description of car accidents:

  • a) Are
  • b) Have been
  • c) Was
  • d) Were reported

Q89. Ahmad __ me for a long time.

  • a) Know
  • b) Have known
  • c) Knows
  • d) Knew

Q90. He is appreciated for being ambidextrous. The underlined word means:

  • a) Active and skillful
  • b) Uses skills and wisdom
  • c) Uses both hands for same skills
  • d) Remains to the point

Q91. He visited the ghettos for the first time. The underlined word means:

  • a) Clean area
  • b) Underprivileged area
  • c) Privileged area
  • d) Modernly constructed

Q92. My friend has a fine __ of old stamps.

  • a) Group
  • b) Bridge
  • c) Band
  • d) Collection

Q93. Choose the correct option:

  • a) Every one of the prisons are full.
  • b) Every one of the prisons had full.
  • c) Every one of the prisons have full.
  • d) Every one of the prisons is full.

Q94. The head master __ to speak to you.

  • a) Wants
  • b) is wanting
  • c) was wanting
  • d) Want

Q95. Knowledge and wisdom no time for connection.

  • a) Has
  • b) Have
  • c) Is
  • d) Are

Q96. Each of three boys _____ to ride.

  • a) Loves
  • b) Love
  • c) Are loving
  • d) Have loved

Q97. Choose the correctly structured sentence:

  • a) Mr. Shan, with his family together goes to England
  • b) Mr. Shan, together with his family, goes to England.
  • c) Mr. Shan, together with his family, go to England.
  • d) Mr. Shan, with his family, go to England together.

Q98. Identify the errors and choose the correct option:

  • a) The English man thinks that he and his country are the best.
  • b) The English man think that he and his country are the best.
  • c) The English man thinks that he and his country are the best.
  • d) The English man think that he and his country are best.

Q99. Pick the word with the correct spelling:

  • a) Appratus
  • b) Apprattus
  • c) Appretous
  • d) Apparatus

Q100. Pick the word with the correct spelling:

  • a) Mercenery
  • b) Mersanary
  • c) Mercenary
  • d) Mersenary

Q101. Chemistry: Which of the following molecules is covalent in nature?

  • a) NaCl
  • b) KCl
  • c) HCl
  • d) NH₃

Q102. Which of the following property increases down the group in alkali metals?

  • a) Ionization energy
  • b) Reactivity
  • c) Electron affinity
  • d) Electronegativity

Q103. The solubility of alkaline earth metals:

  • a) Decreases down the group
  • b) Increases down the group
  • c) Remains constant throughout the group
  • d) First increases then decreases down the group

Q104. Geometric isomerism is exhibited by:

  • a) Alcohol
  • b) Ethers
  • c) Alkynes
  • d) Alkenes

Q105. Benzene can be formed from phenol in which of the following reactions?

  • a) Reduction with hydrogen in the presence of Ni
  • b) Reduction with zinc
  • c) Reduction with alkali
  • d) Reduction with acids

Q106. Lucas test is used for the identification of:

  • a) Alkyl halides
  • b) Alcohols
  • c) Alkenes
  • d) Carboxylic acids

Q107. Phenol has the following characteristics and physical states:

  • a) Colorless crystalline solid
  • b) Colorless crystalline deliquescent solid
  • c) Colorless amorphous solid
  • d) Colorless amorphous deliquescent solid

Q108. Cinnazzaro’s reaction is given by:

  • a) Formaldehyde
  • b) Acetaldehyde
  • c) Acetone
  • d) Butanone

Q109. The identification test for ketones is:

  • a) Benedict’s Solution Test
  • b) Tehling’s Solution Test
  • c) Sodium Nitroprusside Test
  • d) Town’s Test

Q110. Carboxylic acids are water-soluble because they:

  • a) Are more reactive
  • b) Have hydrogen bonding
  • c) Have a low melting point
  • d) Have high density

Q111. Which of the following represents the equation for an ideal gas?

  • a) PV = nRT
  • b) PT = nRv
  • c) P = nRT
  • d) T = nPV/R

Q112. How should the conditions be changed to prevent the value of a given gas from expanding when its mass is increased?

  • a) Temperature is lowered & pressure is increased
  • b) Temperature is increased & pressure is lowered
  • c) Temperature & pressure both are lowered
  • d) Temperature & pressure both are increased

Q113. Which variable mentioned in ideal gas law is assumed to be constant in other gas laws?

  • a) Volume
  • b) Temperature
  • c) Pressure
  • d) Number of moles

Q114. Which of the following molecules will show a higher rate of evaporation?

  • a) Acetone
  • b) Ethanol
  • c) Water
  • d) Ethylene glycol

Q115. Specific heat of water is:

  • a) 418 J/g°C
  • b) 982 J/g°C
  • c) 6.04 J/g°C
  • d) 8.47 J/g°C

Q116. The boiling point of a compound is mostly raised by:

  • a) Dipole-induced dipole interaction
  • b) London dispersion forces
  • c) Intramolecular H-bonding
  • d) Intermolecular H-bonding

Q117. Which of the following statement explains the solubility of a tonic substance in water?

  • a) Water molar mass is 18.02
  • b) Water forms dative bonding
  • c) Water molecule is polar
  • d) Water has high density

Q118. Nature of diamond as solid is:

  • a) Covalent
  • b) Ionic
  • c) Molecular
  • d) Metallic

Q119. Which one of the following is as light as a feather and as strong as iron?

  • a) Graphite
  • b) Graphene
  • c) Mercury
  • d) Diamond

Q120. The pH of human blood is:

  • a) 7.35-7.45
  • b) 8.35-8.45
  • c) 6.35-7.45
  • d) 5.5-6.5

Q121. Proton number of Na₁ is:

  • a) 23
  • b) 1
  • c) 12
  • d) 34

Q122. One mole of ethanol and one mole of ethane have an equal:

  • a) Mass
  • b) Number of atoms
  • c) Number of electrons
  • d) Number of molecules

Q123. The 1st step involved in the determination of the Empirical Formula of a chemical compound is:

  • a) Finding the number of gram atoms of each element
  • b) Percentage composition of each element
  • c) Atomic ratio of each element
  • d) Multiplication of atomic ratio with a whole number

Q124. The number of moles of CO₂ that contains 16g of oxygen is:

  • a) 0.25
  • b) 0.5
  • c) 1.0
  • d) 1.50

Q125. Percentage composition of mass in CO₂ is:

  • a) 30.45% Carbon & 69.54% Oxygen
  • b) 24.22% Carbon & 75.78% Oxygen
  • c) 27.37% Carbon & 72.72% Oxygen
  • d) 41.68% Carbon & 58.12% Oxygen

Q126. Maximum electrons that can be placed in the p subshell are:

  • a) 2
  • b) 4
  • c) 6
  • d) 8

Q127. Apply the n+l rule and calculate which of the following orbitals has maximum energy?

  • a) 3p
  • b) 4s
  • c) 3d
  • d) 4d

Q128. The mass of an electron is:

  • a) 1836 times more than the mass of a proton
  • b) 1836 times less than the mass of a proton
  • c) 1836 times more than the mass of a neutron
  • d) 1836 times more than the mass of a hydrogen atom

Q129. The shape of an orbital is determined by which quantum number?

  • a) n
  • b) l
  • c) m
  • d) s

Q130. The electronic configuration for degenerate orbitals is explained by:

  • a) Aufbau Principle
  • b) n+l Rule
  • c) Hund’s Rule
  • d) Pauli’s Exclusion Principle

Q131. Which term describes a solution in which dissolved solute is in equilibrium with undissolved solute?

  • a) Dilute
  • b) Saturated
  • c) Unsaturated
  • d) Supersaturated

Q132. Rate of any reaction depends upon:

  • a) Temperature
  • b) Concentration
  • c) Pressure
  • d) Rate constant

Q133. What is “NOT TRUE” about the rate of a reaction?

  • a) Concentration of reactants does not affect the rate of a reaction
  • b) Surface area of reactants affects the rate of reaction
  • c) Concentration affects the rate of reaction
  • d) Catalyst affects the rate of a reaction

Q134. Enthalpy change of combustion is exothermic because:

  • a) Energy released in bond breaking is greater
  • b) Energy released in bond making is greater
  • c) Energy absorbed in bond breaking is greater
  • d) Energy absorbed in bond making is greater

Q135. One Calorie is equivalent to:

  • a) 4184 J
  • b) 4184k
  • c) 0.4184 J
  • d) 0.4184k

Q136. Potential of Standard Hydrogen Electrode (SHE) is arbitrarily taken as:

  • a) 10
  • b) 1
  • c) 0
  • d) Zero

Q137. During electrolysis, reduction always occurs at:

  • a) Anode
  • b) Cathode
  • c) SHE
  • d) Saltbridge

Q138. Type of hybridization of carbon in Ethene (C₂H₄) is:

  • a) sp³
  • b) sp²
  • c) sp
  • d) dsp²

Q139. Which of the following molecules is polar?

  • a) CCl₄
  • b) CH₄
  • c) CO₂
  • d) H₂O

Q140. Electron affinity decreases down the group because:

  • a) Proton number increases
  • b) Atomic radius increases
  • c) Electron shielding increases
  • d) Rate constant decreases

Q141. Which of the following is true regarding the periodic table?

  • a) Elements in the same group have the same number of electron shells.
  • b) Elements in the same group have similar chemical properties.
  • c) Elements in the same period have similar atomic masses.
  • d) Elements in the same period have the same electron configuration.

Q142. Which type of chemical bond is formed when electrons are shared between atoms?

  • a) Ionic bond
  • b) Covalent bond
  • c) Hydrogen bond
  • d) Metallic bond

Q143. Which of the following gases is not a greenhouse gas?

  • a) Carbon dioxide (CO₂)
  • b) Methane (CH₄)
  • c) Nitrous oxide (N₂O)
  • d) Oxygen (O₂)

Q144. Which of the following reactions is an example of a redox reaction?

  • a) 2H₂ + O₂ → 2H₂O
  • b) NaCl → Na + Cl₂
  • c) HCl + NaOH → NaCl + H₂O
  • d) CO₂ + H₂O → C₆H₁₂O₆ + O₂

Q145. Which of the following is the most common isotope of hydrogen?

  • a) Deuterium
  • b) Tritium
  • c) Protium
  • d) Hydrogen-1

Q146. What is the atomic number of the element with the symbol Ca?

  • a) 20
  • b) 40
  • c) 10
  • d) 16

Q147. The force of attraction between two masses is inversely proportional to:

  • a) The square of the distance between them.
  • b) The square root of the distance between them.
  • c) The distance between them.
  • d) The cube of the distance between them.

Q148. What is the SI unit of force?

  • a) Newton
  • b) Joule
  • c) Watt
  • d) Pascal

Q149. Which of the following is an example of a physical change?

  • a) Burning of wood
  • b) Melting of ice
  • c) Rusting of iron
  • d) Digesting food

Q150. Which of the following is a characteristic of a chemical reaction?

  • a) Change in the state of matter
  • b) Change in color
  • c) Formation of gas or solid
  • d) All of the above

NUMS MDCAT Answer key 2022 Past Papers

QuestionAnswerQuestionAnswerQuestionAnswer
1B51D101B
2C52C102D
3B53C103D
4C54C104A
5D55B105B
6A56B106A
7C57D107B
8C58A108C
9C59D109D
10C60D110C
11B61C111C
12A62A112B
13A63C113A
14C64A114D
15D65C115B
16B66A116B
17C67D117B
18C68A118A
19C69B119C
20A70A120B
21D71C121A
22C72A122A
23B73B123D
24B74B124A
25B75D125A
26A76A126D
27B77B127C
28C78B128A
29A79D129B
30D80D130A
31B81B131B
32B82D132D
33C83C133B
34C84C134B
35B85C135C
36C86B136B
37D87D137A
38B88B138B
39D89A139B
40C90C140C
41D91C141B
42B92D142A
43B93A143A
44A94B144A
45A95B145A
46C96C146D
47D97B147B
48A100C150B

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