hpas prelims science questions

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HPAS Prelims Science Previous Year Questions (2010 – 2025)

Mastering HPAS Prelims Science questions is important for scoring well in the Himachal Pradesh Administrative Services examination. This year-wise compilation covers previous year questions from Physics, Chemistry, Biology, everyday science and applied science from 2025 down to 2010. Use the interactive quiz format below to test your preparation.

đź’ˇ Interactive Quiz: Click on any option in the questions below to instantly reveal the correct answer!

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HPAS 2025 Science Questions

Q14. A tadpole develops into an adult frog by the process of:
Q33. Given below are two statements: Statement I: Magnetite is a natural magnet. Statement II: A freely suspended magnet always aligns in N-S direction. In the light of the above statements, choose the most appropriate answer from the options given below:
Q34. Given below are two statements: Statement I: The mass of an object is a measure of its inertia. Statement II: Force of friction always opposes motion of objects. In the light of the above statements, choose the most appropriate answer from the options given below:
Q54. Arrange the following substances in increasing order of their pH value (1) Gastric Juice (2) Milk of Magnesia (3) Lemon Juice (4) Pure Water. Choose the correct answer from the options given below :
Q60. What is the audible range of sound for the average human ear ?
Q74. Consider the following statements : (1) A concave mirror always forms a real image. (2) A real image cannot be obtained on a screen. (3) A concave lens always form a virtual image. (4) White light is composed of seven colours. Choose the correct answer from the options given below :
Q93. Match List I with List II: List-I (Indian Breed of Sheep): (a) Patanwadi, (b) Bakharwal, (c) Rampur Bushair, (d) Lohi. List-II (State where found): (i) Rajasthan, (ii) Jammu & Kashmir, (iii) Gujarat, (iv) Himachal Pradesh. Choose the correct answer from the options given below:
Q94. Match List I with List II: List-I (Function): (a) Absorption of food, (b) Killing of bacteria, (c) Chewing of food, (d) Formation of faeces. List-II (Part of digestive canal): (i) Stomach, (ii) Large intestine, (iii) Small intestine, (iv) Buccal cavity. Choose the correct answer from the options given below :

HPAS 2024 Science Questions

Q92. Which of the following processes is not related to nutrition?
Q93. The process by which the heat comes to us from the sun is called:
Q94. Given below are two statements: Statement I: Upper jaw is an immovable joint. Statement II: The cartilages are harder than bones. In the light of the above statements, choose the most appropriate answer from the options given below:
Q95. Given below are two statements: Statement I: Rusting of Iron is a chemical change. Statement II: The process of depositing a layer of Zinc on Iron is called galvanisation. In the light of the above statements, choose the most appropriate answer from the options given below:
Q96. Arrange the following gases according to speed of sound in them from lowest to highest: (1) Sulphur dioxide (2) Helium (3) Oxygen (4) Hydrogen. Choose the correct answer from the options given below:
Q97. Consider the following statements: (1) The innermost part of flower is called ovary. (2) Leaf usually has a lamina. (3) Roots absorb water and minerals from the soil. (4) Petals is not the part of a flower. Choose the correct answer from the options given below:
Q98. Consider the following statements: (1) Insulin regulates blood sugar level. (2) Secretion of estrogen occurs in males. (3) Deficiency of iodine may cause dwarfism. (4) Thyroid gland regulates metabolism for body growth. Choose the correct answer from the options given below:
Q99. Match List I with List II: List I (Acid): (a) Lactic, (b) Oxalic, (c) Tartaric, (d) Formic. List II (Found in): (i) Curd, (ii) Spinach, (iii) Ant’s sting, (iv) Grapes.
Q100. Match List I with List II: List I (Scientist): (a) Galileo, (b) Hertz, (c) Robin Warren, (d) Edward Jenner. List II (Country): (i) Germany, (ii) England, (iii) Italy, (iv) Australia.

HPAS 2023 Science Questions

Q10. Lithosphere is known as:
Q14. Which of the following is a biotic component?
Q20. Winnowing refers to:
Q33. Given below are two statements: Statement I: Force has magnitude as well as direction. Statement II: Sliding friction is smaller than static friction. In the light of the above statements, choose the most appropriate answer from the options given below:
Q34. Given below are two statements: Statement I: The materials which allow heat to pass through them easily are called insulators. Statement II: The range of temperature in clinical thermometer is from 32°C. In the light of the above statements, choose the most appropriate answer from the options given below:
Q60. Arrange the following elements in terms of their atomic number from lowest to highest: (1) Carbon (2) Oxygen (3) Sodium (4) Silicon. Choose the correct answer from the options given below:
Q54. Arrange the following animal products in terms of percent protein from highest to lowest: (1) Cow milk (2) Egg (3) Meat (4) Fish. Choose the correct answer from the options given below:
Q73. Consider the following statements: (1) Protozoans cause serious diseases like dysentery (2) All microorganisms grow on our food and cause food poisoning (3) Microorganisms can live in desert environment (4) All microorganisms are useful for commercial production of medicines and alcohol. Choose the correct answer from the options given below:
Q74. Consider the following statements: (1) Manure and fertilizers are the main source of nutrient supply to crops (2) Inorganic farming is practiced with minimal use of fertilizers and pesticides. (3) Growing of different crops on a piece of land in pre-planned succession is called intercropping (4) Bee-keeping is done to get wax. Choose the correct answer from the options given below:
Q93. Match List I with List II: List-I (Vitamin/Mineral): a. Iron, b. Iodine, c. Calcium, d. Vitamin B1. List-II (Symptoms): i. Weak muscles, ii. Anaemia, iii. Mental disability in children, iv. Tooth decay. Choose the correct answer from the options given below:
Q94. Match list I with list II: List-I (Quantity): a. Weight, b. Volume, c. Temperature, d. Pressure. List-II (Unit of Measurement): i. Cubic meter, ii. Newton, iii. Pascal, iv. Kelvin. Choose the correct answer from the options given below:

HPAS 2021 Science Questions

Q90. Fats are made from edible oils using the process of:
Q91. The main precursors of winter smog are:
Q92. Most kidney stones are composed of:
Q94. There are two statements given below: Statement I: Steam produces less severe burns than water at the same temperature. Statement II: Dry ice is colder than regular ice.
Q95. Arrange the following electromagnetic waves according to the increasing frequency: (1) Gamma rays, (2) X-rays, (3) Radio waves, (4) Microwaves.
Q97. Consider the given four statements and choose the correct answer from the given options: (1) A concave mirror is a diverging mirror (2) Image formed by a concave mirror is generally real and inverted (3) A convex mirror is a converging mirror (4) Image formed by a convex mirror is always virtual, erect and diminished.
Q98. Consider the given four statements about ethanol and choose the correct answer from the given options: (1) It is the main constituent of all alcohol drinks (2) It is not a good solvent (3) It is soluble in water in all proportions (4) It cannot be used as an additive in petrol.
Q99. Match List I with List II: List I (Acid): (a) Ascorbic Acid, (b) Malic Acid, (c) Formic Acid, (d) Tartaric Acid. List II (Source): (i) Apples and pears, (ii) Ant stings, (iii) Tamarind and grapes, (iv) All citrus fruits.
Q100. Match List I with List II: List I: (a) Hydrophone, (b) Megaphone, (c) Anemometer, (d) Tachometer. List II: (i) An instrument measuring the rotation speed of a shaft or disk, (ii) An instrument that measures wind speed, (iii) An instrument that spreads sound to far-off places, (iv) An underwater device that detects and records ocean sounds from all directions.

HPAS 2020 Science Questions

Q11. Consider the given four statements:
1. Blood plasma contains significant amounts of antibodies to fight corona virus.
2. Blood plasma is a pale-yellow in colour.
3. Blood plasma contains hemoglobin.
4. Any person can donate blood plasma to any other person affected by corona virus.
Q17. Match List-I with List-II: List-I: A. Litmus, B. Nitrogen, C. Calcium Hydroxyapatite, D. Hydrogen Peroxide. List-II: 1. Tooth enamel, 2. Anti microbial agent, 3. Chips sealed in packet, 4. Lichen.
Q18. Match List-I with List-II: List-I: A. S.I. unit of power of a lens, B. S.I. unit of electric potential difference, C. Potential difference between two points, D. S.I. unit of electric charge. List-II: 1. V, 2. Coulomb, 3. Diopter, 4. W/Q.
Q19. Match List-I with List-II: List-I: A. Peristaltic movement, B. Gastric glands, C. Amylase, D. Bile juice. List-II: 1. Saliva, 2. Alimentary canal, 3. Inner lining of stomach, 4. Liver.
Q20. Match List-I with List-II: List-I: A. Gregor Mendel, B. Harold C. Urey, C. Charles Darwin, D. Dmitri-I-Mendeleev. List-II: 1. Role of earthworms in soil fertility, 2. University of Vienna, 3. Origin of organic molecules on earth, 4. Periodic table.
Q71. Which of the following statement is not correct?
Q72. Which of the following statement is correct?
Q73. Which of the following statement is not correct?
Q74. Which of the following statement is correct?

HPAS 2019 Science Questions

Q67. A 40 watt electric bulb is used 6 hours every day. The number of electric units it consumes in 30 days are:
Q68. In nuclear fission of U235 with a slow neutron bombardment produces energy approximately:
Q69. The dental alloy used for teeth filing contains:
Q70. Which one of the following substances is not responsible for water hardness?
Q71. The different plant parts in which leucoplasts present are:
Q72. Pteridophyta do not have:
Q73. In which group of animals, coelom is filled with blood?
Q74. Lack of oxygen in muscles often leads to cramps among athletes. The reason for this is:

HPAS 2018 Science Questions

Q7. Which of the following is not derived from wild cabbage?
Q8. Which of the following scientists is associated with the theory of natural selection during the evolution of life?
Q9. In which of the following conditions bio-gas is produced?
Q10. Why do ventricles have thicker muscular walls than atria?
Q11. Which of the following is not a reflex action?
Q12. Which part of the brain maintains posture and equilibrium of the body?
Q13. What is the color of Litmus solution when it is neither acidic nor basic?
Q14. Which of the following statements is not correct?
Q15. What does ‘p’ represent in pH?
Q16. Which of the following does not represent a refractive defect of vision?
Q17. During dispersion of white light by the glass prism, which of the following light of the spectrum bends the most?
Q18. Which of the following phenomena is responsible for twinkling of stars?

HPAS 2017 Science Questions

Q91. Which of the following is not a fundamental unit?
Q92. The liquid used in a clinical thermometer is:
Q93. The image formed by a convex mirror is:
Q94. Renewable source of energy is:
Q95. The global warming has resulted:
Q96. Photosynthesis occurs in:
Q97. In which part of our body RBC formed?
Q98. “Rataundhi” is due to deficiency of which Vitamin?
Q99. Core of a transformer is made of:
Q100. Which of the following is in the deficiency in a body during “Dengue” fever?

HPAS 2016 Science Questions

Q91. In order to prevent oxidation of potato chips during storage in sealed bags, chip manufacturers seal the packet in the presence of:
Q92. Where from is litmus dye extracted?
Q93. If someone is suffering from the problem of acidity after overeating, what is the remedy?
Q94. Which of the following has a pH of about 10?
Q95. Which of the following processes does not take place during photosynthesis?
Q96. Which of the following instruments is used for measuring the depth of the ocean?
Q97. Light year is a unit of :
Q98. Which of the following are the primary colors?
Q99. Nail polish remover contains:
Q100. The most abundant rare gas in the atmosphere is:

HPAS 2015 Science Questions

Q11. When a body is taken from the earth to moon:
Q12. Decibel is used to measure the intensity field of:
Q13. Which of the following vegetable oils does not contain essential fatty acids?
Q14. Usually fuels on burning cause pollution. Which one of the following fuels causes minimum environmental pollution?
Q15. Vegetables are easily perishable because of their high content of:
Q16. Sweat mainly serves to eliminate:
Q17. In a poultry unit the factor most influencing the cost is the cost of:
Q18. Bombyx mori is a:
Q19. Which of the following statements is correct?
Q20. A pressure cooker works on the principle of:

HPAS 2014 Science Questions

Q83. The World's highest ground based telescopic observatory is located in:
Q84. The hormone insulin is a:
Q85. The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by:
Q86. Which one of the following agricultural practices is eco- friendly?
Q87. According to the World Health Organization, the disease which causes the death of the largest number of people today is:
Q88. The normal temperature of human body in Kelvin scale is:
Q89. The only snake that builds a nest is:
Q90. Which one of the following does not contain silver?
Q91. Aluminium surfaces are often ‘anodized’, this means the deposition of a layer of:
Q92. Which one of the following polymers is widely used for making bullet proof material?
Q93. When a CD compact disc use in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of :
Q94. Which one of the following does a TV remote control unit use to operate a TV set?
Q95. The working principle of a washing machine is:
Q96. A fuse is used in main electric supply as a safety device. Which one of the following statements about the fuse is correct?
Q97. A simple machine helps a person in doing:
Q98. Domestic electrical wiring is basically a:
Q99. The most widely used antacid is:
Q100. Which of the following drugs reduces fever?

HPAS 2013 Science Questions

Q84. The working principle of a washing machine is:
Q85. An air bubble in water will act like a:
Q86. Diffusion of light in the atmosphere takes place due to:
Q87. The characteristics odour of garlic due to:
Q88. Which one of the following is an active component of clove oil?
Q89. Which one of the following is not an essential micronutrient for plants?
Q90. fat present below the skin surface in our body, acts as a barrier against:
Q91. When ants bite, they inject:
Q92. The “stones” formed in human kidney consist mostly of:
Q93. Cryogenic engines find applications in :
Q94. In eye donation, which one of the following parts of donor’s eyes is utilized?
Q95. The major component of honey is:
Q96. Arteries supplying blood to the heart are called:
Q97. What is the average fat content of “Buffalo milk”?
Q98. Which one of the following fuels causes minimum environmental pollution?
Q99. Standard 18-carat gold sold in the market contains:
Q100. Which one of the following types of glasses can cut-off ultraviolet rays?

HPAS 2011 Science Questions

Q90. Which of the following is not a natural polymer?
Q91. A polymer which is used for making ropes and carpet fibers is:
Q92. The urine sample of a diabetic patients contains:
Q93. The quality of diesel oil for use in diesel engines is determined by:
Q94. Rusting of iron is:
Q95. When mild steel is heated to a high temperature and suddenly cooled in water, it becomes hard and brittle. The process is called:
Q96. Which of the following is used as moderators in nuclear reactors?
Q97. Silicon carbide (SiC) is known as:
Q98. A pale blue gas with a fish-like odour restores the color of a blackened lead painting. The gas is also used as rocket fuel. It is:
Q99. The bleaching action of chlorine occurs in the presence of:
Q100. Haem is the important biologically in the myoglobin which is used to store:

HPAS 2010 Science Questions

Q3. Which of the following is not a plant hormone?
Q4. Asbestos is no longer preferred for commercial use because:
Q5. Iodine is obtained from:
Q6. The term Biomagnification refers to:
Q7. Which part of the world has a high density of organisms?
Q8. Hemorrhagic dengue fever is spread by:
Q56. Which one of the following in non-toxic?
Q57. Which of the following properties is not related to LASER?
Q58. In which form is phosphorus predominantly found in soil?
Q59. Carbohydrates are not used in:
Q60. Nanotechnology is where particles of the following size are used:
Q94. Antibodies are found in:
Q95. Night-blindness is caused by the deficiency of:
Q96. Human eye is sensitive to wavelength it’s the range of:

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