POLAC 2025 Aptitude Test Past Questions for Science Candidates

POLAC 2025 Aptitude Test Past Questions for Science Candidates

EXAM INSTRUCTIONS

1. This paper contains 100 multiple-choice questions.
2. Each question carries 1 mark.
3. Duration: 1 hour.
4. Choose the correct option A–D.
5. Questions cover:
   • English Language
   • Mathematics
   • Physics
   • Chemistry
   • Biology

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QUESTIONS 1–150

1. Choose the correct synonym of “Accurate”:

A. Wrong
B. Exact
C. Rough
D. False
Answer: B

2. Which sentence is correct?

A. She don’t know the answer
B. She doesn’t knows the answer
C. She doesn’t know the answer
D. She don’t knows the answer
Answer: C

3. The value of 232^323 is:

A. 6
B. 8
C. 9
D. 12
Answer: B

4. Simplify: $5+3\times 2$

A. 16
B. 11
C. 10
D. 13
Answer: B

5. A body remains at rest unless acted upon by a force. This is:

A. Newton’s First Law
B. Newton’s Second Law
C. Newton’s Third Law
D. Law of inertia
Answer: A

6. Unit of force is:

A. Joule
B. Watt
C. Newton
D. Pascal
Answer: C

7. The SI unit of current is:

A. Volt
B. Ampere
C. Ohm
D. Coulomb
Answer: B

8. Water boils at:

A. 90°C
B. 100°C
C. 80°C
D. 120°C
Answer: B

9. Which element has atomic number 1?

A. Oxygen
B. Hydrogen
C. Carbon
D. Nitrogen
Answer: B

10. Photosynthesis occurs in:

A. Roots
B. Leaves
C. Stem
D. Flower
Answer: B

11. The process by which plants lose water is:

A. Respiration
B. Transpiration
C. Photosynthesis
D. Digestion
Answer: B

12. Which organ pumps blood?

A. Brain
B. Liver
C. Heart
D. Kidney
Answer: C

13. The square root of 49 is:

A. 6
B. 7
C. 8
D. 9
Answer: B

14. Velocity is:

A. Speed with direction
B. Speed only
C. Distance
D. Time
Answer: A

15. Which gas supports combustion?

A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Hydrogen
Answer: A

16. A solution with pH 7 is:

A. Acidic
B. Basic
C. Neutral
D. Strong acid
Answer: C

17. The unit of energy is:

A. Watt
B. Joule
C. Pascal
D. Newton
Answer: B

18. Which organ filters blood?

A. Liver
B. Kidney
C. Heart
D. Lungs
Answer: B

19. The chemical symbol for sodium is:

A. So
B. Na
C. S
D. Sn
Answer: B

20. Which of the following is a vector quantity?

A. Speed
B. Distance
C. Velocity
D. Time
Answer: C

21. The formula for density is:

A. Mass × volume
B. Mass ÷ volume
C. Volume ÷ mass
D. Mass + volume
Answer: B

22. The largest organ in the human body is:

A. Liver
B. Skin
C. Heart
D. Brain
Answer: B

23. Which part of the cell controls activities?

A. Cytoplasm
B. Nucleus
C. Membrane
D. Ribosome
Answer: B

24. The process of cell division is:

A. Respiration
B. Mitosis
C. Digestion
D. Excretion
Answer: B

25. Simplify: $10-4+2$

A. 8
B. 6
C. 4
D. 2
Answer: A

26. Work is done when:

A. Force is applied
B. Object moves
C. Force moves an object
D. Energy is lost
Answer: C

27. The SI unit of power is:

A. Joule
B. Watt
C. Newton
D. Volt
Answer: B

28. The boiling point of water in Kelvin is:

A. 273K
B. 300K
C. 373K
D. 400K
Answer: C

29. Which acid is found in vinegar?

A. Sulfuric acid
B. Acetic acid
C. Nitric acid
D. Hydrochloric acid
Answer: B

30. Which blood cells fight infection?

A. Red blood cells
B. White blood cells
C. Platelets
D. Plasma
Answer: B

31. The product of $6\times 7$ is:

A. 42
B. 36
C. 48
D. 49
Answer: A

32. Force = mass ×:

A. Velocity
B. Acceleration
C. Distance
D. Time
Answer: B

33. Which planet is closest to the sun?

A. Earth
B. Venus
C. Mercury
D. Mars
Answer: C

34. Which gas do humans exhale?

A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Hydrogen
Answer: C

POLAC 2025 Aptitude Test Past Questions for Science Candidates

35. The pH scale ranges from:

A. 1–10
B. 0–14
C. 1–7
D. 7–14
Answer: B

36. The smallest unit of life is:

A. Atom
B. Cell
C. Tissue
D. Organ
Answer: B

37. Which part of the plant makes food?

A. Root
B. Stem
C. Leaf
D. Flower
Answer: C

38. Speed = distance ÷:

A. Time
B. Force
C. Energy
D. Work
Answer: A

39. The SI unit of temperature is:

A. Celsius
B. Kelvin
C. Fahrenheit
D. Joule
Answer: B

40. Which metal is liquid at room temperature?

A. Iron
B. Mercury
C. Copper
D. Zinc
Answer: B

41. Which organ is responsible for breathing?

A. Heart
B. Lungs
C. Liver
D. Brain
Answer: B

42. The formula for water is:

A. CO₂
B. H₂O
C. O₂
D. H₂
Answer: B

43. 15 ÷ 3 =

A. 4
B. 5
C. 6
D. 7
Answer: B

44. Which force pulls objects toward Earth?

A. Magnetic force
B. Friction
C. Gravity
D. Tension
Answer: C

45. Which vitamin is obtained from sunlight?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer: D

46. Which organ produces insulin?

A. Liver
B. Kidney
C. Pancreas
D. Heart
Answer: C

47. The SI unit of length is:

A. Meter
B. Kilometer
C. Centimeter
D. Mile
Answer: A

48. Which element is a metal?

A. Oxygen
B. Nitrogen
C. Iron
D. Carbon
Answer: C

49. Evaporation is:

A. Liquid to gas
B. Gas to liquid
C. Solid to liquid
D. Solid to gas
Answer: A

50. Which system controls the body?

A. Digestive
B. Nervous
C. Circulatory
D. Respiratory
Answer: B

51. Calculate: 32+423^2 + 4^232+42

A. 25
B. 12
C. 49
D. 7
Answer: A

52. The acceleration due to gravity is approximately:

A. 9.8 m/s²
B. 10 m/s²
C. 8 m/s²
D. 12 m/s²
Answer: A

53. Which law states action equals reaction?

A. First law
B. Second law
C. Third law
D. Law of motion
Answer: C

54. An acid turns blue litmus:

A. Red
B. Blue
C. Green
D. Yellow
Answer: A

55. The powerhouse of the cell is:

A. Nucleus
B. Mitochondria
C. Ribosome
D. Cytoplasm
Answer: B

56. Which organ removes carbon dioxide?

A. Heart
B. Kidney
C. Lungs
D. Liver
Answer: C

57. The SI unit of voltage is:

A. Ampere
B. Volt
C. Ohm
D. Watt
Answer: B

58. Which particle has no charge?

A. Proton
B. Electron
C. Neutron
D. Ion
Answer: C

59. The chemical symbol for gold is:

A. Go
B. Au
C. Ag
D. Gd
Answer: B

60. Which organ stores bile?

A. Liver
B. Gall bladder
C. Kidney
D. Pancreas
Answer: B

61. Which formula is correct for speed?

A. Distance × time
B. Distance ÷ time
C. Time ÷ distance
D. Distance + time
Answer: B

62. A base turns red litmus:

A. Blue
B. Red
C. Green
D. Yellow
Answer: A

POLAC 2025 Aptitude Test Past Questions for Science Candidates

63. Which system transports nutrients?

A. Nervous
B. Circulatory
C. Digestive
D. Respiratory
Answer: B

64. Which gas is used in photosynthesis?

A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
Answer: B

65. The boiling point increases with:

A. Pressure
B. Temperature
C. Volume
D. Mass
Answer: A

66. Which organ produces urine?

A. Kidney
B. Liver
C. Heart
D. Lungs
Answer: A

67. Work = force ×:

A. Speed
B. Distance
C. Time
D. Energy
Answer: B

68. Which metal reacts with water?

A. Sodium
B. Copper
C. Gold
D. Silver
Answer: A

69. The human skeleton supports:

A. Movement
B. Structure
C. Protection
D. All of the above
Answer: D

70. Which organ controls coordination?

A. Brain
B. Heart
C. Liver
D. Kidney
Answer: A

71. Which quantity is scalar?

A. Velocity
B. Force
C. Speed
D. Acceleration
Answer: C

72. Which compound is organic?

A. CO₂
B. CH₄
C. H₂O
D. NaCl
Answer: B

73. Which organ absorbs nutrients?

A. Stomach
B. Small intestine
C. Large intestine
D. Liver
Answer: B

74. The SI unit of resistance is:

A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C

75. Which law relates pressure and volume?

A. Boyle’s law
B. Charles law
C. Ohm’s law
D. Newton’s law
Answer: A

76. Which vitamin prevents scurvy?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer: C

77. The function of red blood cells is:

A. Fight infection
B. Carry oxygen
C. Clot blood
D. Produce hormones
Answer: B

78. Which is a renewable resource?

A. Coal
B. Oil
C. Solar energy
D. Gas
Answer: C

79. Which organ aids digestion?

A. Liver
B. Brain
C. Heart
D. Skin
Answer: A

80. The SI unit of frequency is:

A. Hertz
B. Joule
C. Watt
D. Pascal
Answer: A

81. Which force opposes motion?

A. Gravity
B. Friction
C. Tension
D. Magnetism
Answer: B

82. Which planet is known as the Red Planet?

A. Earth
B. Mars
C. Venus
D. Jupiter
Answer: B

83. Which organ removes waste?

A. Kidney
B. Brain
C. Heart
D. Lungs
Answer: A

84. Which element is non-metal?

A. Iron
B. Copper
C. Oxygen
D. Zinc
Answer: C

85. Which system fights disease?

A. Digestive
B. Immune
C. Respiratory
D. Circulatory
Answer: B

86. Which process releases energy in cells?

A. Photosynthesis
B. Respiration
C. Digestion
D. Excretion
Answer: B

87. Which quantity has direction?

A. Distance
B. Speed
C. Velocity
D. Time
Answer: C

88. Which metal is best conductor?

A. Copper
B. Iron
C. Zinc
D. Lead
Answer: A

89. Which gas is needed for respiration?

A. Nitrogen
B. Oxygen
C. Carbon dioxide
D. Hydrogen
Answer: B

POLAC 2025 Aptitude Test Past Questions for Science Candidates

90. Which organ produces bile?

A. Liver
B. Kidney
C. Heart
D. Lungs
Answer: A

91. Which wave needs medium?

A. Light
B. Sound
C. Radio
D. X-ray
Answer: B

92. Which organ controls reflex action?

A. Brain
B. Spinal cord
C. Heart
D. Liver
Answer: B

93. Which substance speeds up reaction?

A. Catalyst
B. Acid
C. Base
D. Salt
Answer: A

94. Which organ helps in breathing?

A. Lungs
B. Heart
C. Liver
D. Kidney
Answer: A

95. Which blood vessel carries blood away from heart?

A. Vein
B. Artery
C. Capillary
D. Valve
Answer: B

96. Which element is a noble gas?

A. Oxygen
B. Helium
C. Nitrogen
D. Hydrogen
Answer: B

97. Which system removes waste?

A. Excretory
B. Digestive
C. Nervous
D. Circulatory
Answer: A

98. Which quantity is measured in Newton?

A. Force
B. Energy
C. Power
D. Pressure
Answer: A

99. Which organ pumps blood?

A. Brain
B. Heart
C. Liver
D. Kidney
Answer: B

100. Science is best defined as:

A. Study of books
B. Systematic study of nature
C. Classroom activity
D. Examination subject
Answer: B

Next sets of Questions

1. A car travels 20 m in 4 s and then 30 m in 6 s. Its average speed is:

A. 5 m/s
B. 6 m/s
C. 4 m/s
D. 10 m/s
Answer: A
(Trap: total distance ÷ total time = 50 ÷ 10 = 5)

2. Which of the following quantities is NOT a vector?

A. Velocity
B. Acceleration
C. Speed
D. Force
Answer: C

3. If force is constant and mass increases, acceleration will:

A. Increase
B. Decrease
C. Remain constant
D. Become zero
Answer: B

4. Which of the following has the highest pH?

A. 2
B. 5
C. 7
D. 12
Answer: D

5. A student says “All acids are dangerous.” This statement is:

A. Correct
B. Incorrect
C. Partially correct
D. Scientific
Answer: C

6. The boiling point of water decreases when:

A. Pressure increases
B. Pressure decreases
C. Temperature increases
D. Volume increases
Answer: B

7. Which organelle is absent in red blood cells?

A. Nucleus
B. Cytoplasm
C. Cell membrane
D. Hemoglobin
Answer: A

POLAC 2025 Aptitude Test Past Questions for Science Candidates

8. The SI unit of pressure is:

A. N/m
B. N/m²
C. kg/m²
D. J/m
Answer: B

9. Which statement about enzymes is correct?

A. They are used up in reactions
B. They speed up reactions
C. They slow reactions
D. They change products
Answer: B

10. The formula $V=IR$ represents:

A. Power law
B. Ohm’s law
C. Newton’s law
D. Boyle’s law
Answer: B

11. Which of the following is NOT a metal property?

A. Conducts electricity
B. Malleable
C. Brittle
D. Ductile
Answer: C

12. A body moving at constant velocity has:

A. Increasing speed
B. Zero acceleration
C. Changing direction
D. Increasing force
Answer: B

13. Which gas turns limewater milky?

A. Oxygen
B. Hydrogen
C. Carbon dioxide
D. Nitrogen
Answer: C

14. Which blood vessel carries oxygenated blood?

A. Vein
B. Artery
C. Capillary
D. Lymph
Answer: B

15. If energy is conserved, it means:

A. Energy is destroyed
B. Energy is constant
C. Energy is lost
D. Energy is created
Answer: B

16. Which of the following is a scalar quantity?

A. Force
B. Velocity
C. Work
D. Acceleration
Answer: C

17. The main function of the kidney is:

A. Digestion
B. Filtration
C. Respiration
D. Circulation
Answer: B

18. The unit of electric current is:

A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: B

19. Which law explains floating?

A. Newton’s law
B. Archimedes’ principle
C. Boyle’s law
D. Ohm’s law
Answer: B

20. A base reacts with an acid to form:

A. Water only
B. Salt only
C. Salt and water
D. Gas only
Answer: C

21. The speed of light is approximately:

A. 3 × 10⁸ m/s
B. 3 × 10⁶ m/s
C. 3 × 10⁴ m/s
D. 3 × 10² m/s
Answer: A

22. Which of the following increases friction?

A. Smooth surface
B. Lubrication
C. Rough surface
D. Oil
Answer: C

23. Which organ controls hormones?

A. Brain
B. Pituitary gland
C. Heart
D. Liver
Answer: B

24. Which process requires oxygen?

A. Fermentation
B. Respiration
C. Diffusion
D. Osmosis
Answer: B

POLAC 2025 Aptitude Test Past Questions for Science Candidates

25. The atomic number represents:

A. Neutrons
B. Electrons
C. Protons
D. Nucleons
Answer: C

26. Which is the correct formula for density?

A. m × v
B. m/v
C. v/m
D. m + v
Answer: B

27. Which of the following is NOT renewable?

A. Solar
B. Wind
C. Coal
D. Hydro
Answer: C

28. Which vitamin deficiency causes rickets?

A. A
B. B
C. C
D. D
Answer: D

29. A catalyst:

A. Slows reaction
B. Speeds reaction
C. Is consumed
D. Changes product
Answer: B

30. Which organ produces bile?

A. Liver
B. Kidney
C. Pancreas
D. Heart
Answer: A

31. The SI unit of power is:

A. Joule
B. Watt
C. Newton
D. Pascal
Answer: B

32. Which is a noble gas?

A. Oxygen
B. Helium
C. Hydrogen
D. Nitrogen
Answer: B

33. Which of the following is NOT a wave?

A. Sound
B. Light
C. Heat
D. Radio
Answer: C

34. Which structure carries genetic information?

A. Ribosome
B. DNA
C. Cytoplasm
D. Protein
Answer: B

35. Which force acts at a distance?

A. Friction
B. Tension
C. Gravity
D. Contact
Answer: C

36. Which system controls reflex?

A. Brain
B. Spinal cord
C. Heart
D. Kidney
Answer: B

37. Which gas is most abundant in air?

A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
Answer: C

38. Which quantity is measured in Joules?

A. Force
B. Energy
C. Power
D. Pressure
Answer: B

39. Which part of plant absorbs water?

A. Leaf
B. Root
C. Stem
D. Flower
Answer: B

40. Which of the following is NOT an acid?

A. HCl
B. NaOH
C. H₂SO₄
D. HNO₃
Answer: B

41. Which of the following is a compound?

A. Oxygen
B. Hydrogen
C. Water
D. Iron
Answer: C

POLAC 2025 Aptitude Test Past Questions for Science Candidates

42. Which organ pumps blood?

A. Brain
B. Heart
C. Liver
D. Kidney
Answer: B

43. Which law relates pressure and volume?

A. Charles law
B. Boyle’s law
C. Ohm’s law
D. Newton’s law
Answer: B

44. Which instrument measures temperature?

A. Barometer
B. Thermometer
C. Ammeter
D. Voltmeter
Answer: B

45. Which is NOT part of digestive system?

A. Stomach
B. Liver
C. Heart
D. Intestine
Answer: C

46. Which type of energy is stored energy?

A. Kinetic
B. Potential
C. Heat
D. Light
Answer: B

47. Which blood group is universal donor?

A. A
B. B
C. AB
D. O
Answer: D

48. Which of the following is NOT a cell?

A. Red blood cell
B. Nerve cell
C. Tissue
D. Egg cell
Answer: C

49. Which quantity is measured in meters?

A. Time
B. Length
C. Mass
D. Temperature
Answer: B

50. Which best defines science?

A. Guessing
B. Systematic study
C. Opinion
D. Theory only
Answer: B