BPSC CDPO Pre Exam Paper 15 May 2022 (Answer Key) in English Language

Bihar Public Service Commission (BPSC) has Conduct the BPSC CDPO (Child Development Project Officer) Prelims Exam 2022 held on 15 May 2022. This  (BPSC CDPO – Child Development Project Officer Prelims Exam 2022) Question Paper available here with Answer Key. 

Exam – BPSC CDPO Pre Exam 2022
Subject – General Studies
Number Of Questions – 150
Paper Set – A
Date of Exam – 15 May, 2022

BPSC CDPO (Child Development Project Officer) Prelims Exam 2022
(Answer Key)

1. 1 zepto is equal to
(A) 10^-25
(B) 10²⁵
(C) 10^-21
(D) 10^-22
(E) None of the above/More than one of the above

2. The time period of a pendulum clock
(A) 1 second
(B) 2 seconds
(C) 1 minute
(D) 1 hour
(E) None of the above/More than one of the above

3. A sudden rise in the barometric height indicates
(A) coming of storm or cyclone
(B) possibility of rain
(C) dry weather
(D) extremely dry weather
(E) None of the above/More than one of the above

4. During very cold weather, ______ of water helps in preserving the aquatic life.
(A) contraction
(B) expansion
(C) evaporation
(D) sublimation
(E) None of the above/More than one of the above

5. Which of the following is a greenhouse gas?
(A) Carbon dioxide
(B) Ozone
(C) CFC
(D) Methane
(E) None of the above/More than one of the above

6. In a barber’s shop, two plane mirrors are placed
(A) parallel to each other
(B) perpendicular to each other
(C) at an angle of 45 degree
(D) at an angle of 60 degree
(E) None of the above/More than one of the above

7. The hearing frequency range of cat is
(A) 20 Hz to 20 kHz
(B) 20 Hz to 50 kHz
(C) 45 Hz to 64 kHz
(D) 10 Hz to 100 kHz
(E) None of the above/More than one of the above

8. When a bar magnet is placed in the earth’s magnetic field, with its north pole pointing towards the geographical north, the number of neutral points around the magnet is
(A) 2
(B) 4
(C) 6
(D) 5
(E) None of the above/More than one of the above

9. In big showrooms and departmental stores, the vigilance mirror used is a
(A) plane mirror
(B) convex mirror
(C) concave mirror
(D) combination of concave mirror and convex mirror
(E) None of the above/More than one of the above

10. The process of charging a conductor by bringing it near another charged conductor, without making any contact, is called
(A) induction
(B) conduction
(C) convection
(D) radiation
(E) None of the above/More than one of the above

11. The process of separating different dissolved constituents of a mixture by their adsorption on an appropriate material is called
(A) diffusion
(B) distillation
(C) chromatography
(D) centrifugation
(E) None of the above/More than one of the above

12. The alphabet X in X-ray stands for ray.
(A) express
(B) unknown
(C) infrared
(D) xenon
(E) None of the above/More than one of the above

13. Water gas is a mixture of
(A) CO + H₂
(B) CO + O₂
(C) CO + N₂
(D) CO₂ + H₂
(E) None of the above/More than one of the above

14. Water is an excellent cooling agent because of its
(A) low boiling point
(B) high boiling point
(C) high specific heat
(D) low specific heat
(E) None of the above/More than one of the above

15. Colloids have particle size range between
(A) 10^-7 m to 10^-10 m
(B) 10⁺⁷ m to 10⁺¹⁰ m
(C) 10^-10 m to 10^-12 m
(D) 10^-5 m to 10^-7 m
(E) None of the above/More than one of the above

16. The purest form of the amorphous carbon is
(A) wood charcoal
(B) sugar charcoal
(C) bone charcoal
(D) lampblack
(E) None of the above/More than one of the above

17. The modern atomic symbols are based on the method proposed by
(A) Bohr
(B) Berzelius
(C) Dalton
(D) Thomson
(E) None of the above/More than one of the above

18. Which of the following is not a characteristic of a chemical change?
(A) It is irreversible
(B) New substance is formed
(C) No net change in energy is involved
(D) It involves absorption of energy
(E) None of the above/More than one of the above

19. Substances that readily absorb moisture from other substances without chemically reacting with them are called
(A) desiccants
(B) deliquescent substances
(C) efflorescent substances
(D) dehydrating agents
(E) None of the above/More than one of the above

20. Inhalation of air polluted with carbon monoxide (CO) is dangerous because
(A) CO combines with oxygen in blood
(B) CO combines with hemoglobin
(C) CO removes water from the body and causes dehydration
(D) CO causes coagulation of proteins in the body
(E) None of the above/More than one of the above