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BPSC 2022 — Science & Technology Questions with Answers

All 40 Science & Technology previous-year questions from BPSC 2022, each with the correct answer and a full explanation. Practise them as a free, timed mock test with instant scoring.

1. Q1.Technology Policy

   Write short answer: What do you understand by Indigenization of Technology in the Indian context?

2. Q2.Nuclear Energy

   Write short answer: Explain why it is necessary for India to expand its nuclear energy program to meet the growing energy needs. Also write the precautions needed in the nuclear program.

3. Q3.Information Technology

   Write short answer: Write the difference between internet and intranet. Explain how internet and intranet have changed the life of human beings.

4. Q4.Applied Technology

   Write short answer: Write a note on Technology-driven modernization of Bihar.

5. Q5.Nanotechnology

   Write short answer: Discuss the role of nanotechnology in the health sector. Mention with example how it is used for treatment of various diseases.

6. Q6.Cyber Security

   Along with the advancements in the field of computer and communication technology, India has faced severe data threat both in public and government domain. Discuss the various areas of cyber threat and the measures taken by the Central Government in each of them with the help of existing technology.

7. Q7.Water Technology

   With the mission of providing potable water to every household on the one hand and water scarcity in the face of growing population on the other, throw light on the role being played by the Indian Government for water conservation. Also discuss the scientific and technological developments which have been used by the State of Bihar in fulfilling the objectives of the Central Government.

8. Q8.Astronomy

   Which is the principal celestial body of the solar system?

   • a)Jupiter
   • b)Saturn
   • c)Sun
   • d)Earth
   • e)None of the above / More than one of the above
9. Q9.Chemistry

   Which elements are abundant in the formation of the Earth's inner layer NIFE?

   • a)Silica and Magnesium
   • b)Basalt and Silica
   • c)Nickel and Ferum
   • d)Silica and Aluminium
   • e)None of the above / More than one of the above
10. Q10.Physics — Optics

    Which type of lens is used in a magnifying glass?

    • a)Plano-concave
    • b)Convex lens
    • c)Convex mirror
    • d)Concave
    • e)None of the above / More than one of the above
11. Q11.Physics

    The paramagnetic (paramagnetic) principle of magnetism is exhibited by which of the following?

    • a)Mercury
    • b)Iron
    • c)Platinum
    • d)Nickel
    • e)None of the above / More than one of the above
12. Q12.Physics

    Which fundamental particles are present in the nucleus of an atom?

    • a)Electron and Proton
    • b)Proton and Neutron
    • c)Only Electron
    • d)Electron and Neutron
    • e)None of the above / More than one of the above
13. Q13.Chemistry

    The metallurgical process under which metal is found in a mixed state is called

    • a)Roasting
    • b)Calcination
    • c)Froth flotation
    • d)Smelting
    • e)None of the above / More than one of the above
14. Q14.Chemistry

    Which of the following are the components of brass?

    • a)Iron and Zinc
    • b)Copper and Nickel
    • c)Iron and Copper
    • d)Zinc and Copper
    • e)None of the above / More than one of the above
15. Q15.Chemistry

    Which of the following is called 'unslaked lime'?

    • a)CaCO2
    • b)Ca(OH)2
    • c)CaCl2
    • d)CaO
    • e)None of the above / More than one of the above
16. Q16.Chemistry

    Which of the following changes occurs in the weight of rusted iron?

    • a)It first decreases and then increases
    • b)It first increases and then decreases
    • c)It remains uniform
    • d)It increases for a long time
    • e)None of the above / More than one of the above
17. Q17.Chemistry

    Which of the following is also called 'white metal'?

    • a)Rhodium
    • b)Platinum
    • c)Palladium
    • d)Nickel
    • e)None of the above / More than one of the above
18. Q18.Chemistry

    Consider the following statements regarding 'noble metals': 1. 'Noble metals' are found in pure form in nature. 2. Uranium and lead are examples of noble metals. Which of the above statement(s) is/are correct?

    • a)Only 2
    • b)Both 1 and 2
    • c)Brass is also a noble metal.
    • d)Only 1
    • e)None of the above / More than one of the above
19. Q19.Chemistry — Solutions

    Consider the following statements: 1. When salt is dissolved in pure water, the boiling point of water increases and the freezing point of water decreases. 2. When methyl alcohol is added to water, the boiling point of water decreases. Which of the above statement(s) is/are correct?

    • a)Only 1
    • b)Only 2
    • c)Both 1 and 2
    • d)Salt and methyl alcohol behave similarly.
    • e)None of the above / More than one of the above
20. Q20.Chemistry

    Which of the following is a major component of biogas?

    • a)Propene
    • b)Butane
    • c)Ethene
    • d)Methane
    • e)None of the above / More than one of the above
21. Q21.Chemistry

    Due to which of the following chemicals does a firecracker show a bright red color when it bursts?

    • a)Sodium
    • b)Sulfur
    • c)Magnesium
    • d)Strontium
    • e)None of the above / More than one of the above
22. Q22.Biology

    What are salt-loving plants called?

    • a)Mesophytes
    • b)Glycophytes
    • c)Halophytes
    • d)Xerophytes
    • e)None of the above / More than one of the above
23. Q23.Biology

    Which of the following is not found in fungal plants?

    • a)Carbon dioxide
    • b)Chlorophyll
    • c)Sunlight
    • d)Oxygen
    • e)None of the above / More than one of the above
24. Q24.Biology

    What is the correct definition of 'pollination'?

    • a)Germination of pollen grain
    • b)Reaching of pollen tube to ovule
    • c)Insects reaching flowers
    • d)Transfer of pollen grain from anther to stigma
    • e)None of the above / More than one of the above
25. Q25.Biology

    Plants primarily obtain their nutrients from?

    • a)Atmosphere
    • b)Light
    • c)Soil
    • d)Chlorophyll
    • e)None of the above / More than one of the above
26. Q26.Biology

    Pine, fir, spruce, cedar, larch and cypress are famous timber-producing plants, many of which are also found in the hilly regions of India. What are all these called?

    • a)Gymnosperms
    • b)Monocotyledons
    • c)Dicotyledons
    • d)Angiosperms
    • e)None of the above / More than one of the above
27. Q27.Biology

    Which of the following pairs is correctly matched?

    • a)Tuberculosis—ATS
    • b)Tetanus—BCG
    • c)Malaria—Chloroquine
    • d)Scurvy—Thiamine
    • e)None of the above / More than one of the above
28. Q28.Biology

    An animal without red blood cells is

    • a)Earthworm
    • b)Snake
    • c)Peacock
    • d)Frog
    • e)None of the above / More than one of the above
29. Q29.Biology

    After the decomposition of carbohydrates, what is finally formed?

    • a)Glycerol
    • b)Glucose
    • c)Maltose
    • d)Amino acid
    • e)None of the above / More than one of the above
30. Q30.Biology

    Most enzymes are

    • a)Fats
    • b)Acids
    • c)Bases
    • d)Proteins
    • e)None of the above / More than one of the above
31. Q31.Biology — Immunology

    Which scientist/physician first started vaccination?

    • a)Robert Koch
    • b)Élie Metchnikoff
    • c)Edward Jenner
    • d)Joseph Lister
    • e)None of the above / More than one of the above
32. Q32.Physics

    What is the working principle of a washing machine?

    • a)Diffusion
    • b)Centrifugation
    • c)Dialysis
    • d)Reverse Osmosis
    • e)None of the above / More than one of the above
33. Q33.Physics — Optics

    In which of the following media will the speed of light be minimum?

    • a)Vacuum (Zero)
    • b)Air
    • c)Glass
    • d)Water
    • e)None of the above / More than one of the above
34. Q34.Physics

    Which of the following is NOT a 'vector quantity'?

    • a)Velocity
    • b)Torque
    • c)Displacement
    • d)Speed
    • e)None of the above / More than one of the above
35. Q35.Physics

    If the rotational speed (rotation) of the Earth is increased, then the weight of a body on the equator will

    • a)decrease
    • b)not change
    • c)become double
    • d)increase
    • e)None of the above / More than one of the above
36. Q36.Physics

    Who first defined motion?

    • a)Newton
    • b)Kepler
    • c)Ptolemy
    • d)Galileo
    • e)None of the above / More than one of the above
37. Q37.Chemistry

    According to which law, at the same temperature and pressure, the number of molecules in a definite volume of all gases is the same?

    • a)Graham's Law
    • b)Pascal's Law
    • c)Avogadro's Law
    • d)Coriolis Effect
    • e)None of the above / More than one of the above
38. Q38.Physics

    Which of these scientists presented the 'Theory of Relativity'?

    • a)Isaac Newton
    • b)Stephen Hawking
    • c)Marie Curie
    • d)Albert Einstein
    • e)None of the above / More than one of the above
39. Q39.Physics

    Due to a change in temperature in a conductor, there is a change in potential in it. This phenomenon is called

    • a)Joule effect
    • b)Seebeck effect
    • c)Peltier effect
    • d)Thomson effect
    • e)None of the above / More than one of the above
40. Q40.Space

    Which country launched its first 'Arktika-M' satellite to monitor the Arctic climate?

    • a)China
    • b)Russia
    • c)India
    • d)Japan
    • e)None of the above / More than one of the above