67th BPSC Prelims Exam Paper 08 May 2022 (English) – Answer Key

67th BPSC Prelims Exam Paper 08 May 2022 (English) : 67th BPSC Prelims Exam Paper held on 08 May 2022 with Answer Key in English language. 67th BPSC Prelims Exam held by Bihar Public Service Commission (BPSC) on 08/05/2022 at various centers in Bihar state with answer key available.

Exam Paper :- 67th BPSC Preliminary Exam 2022
Exam Orgainser :- Bihar Public Service Commission (BPSC)
Subject :- General Studies
Exam Date :- 08/05/2022
Exam Time :- 12 pm to 2 pm
Total Question :- 150

67th BPSC Preliminary Exam 2022

1. A person standing in front of a mirror finds his image larger than himself This implies that the mirror is
(A) concave
(B) plane
(C) convex
(D) cylindrical with bulging side outwards
(E) None of the above/More than one of the above

2. A fan produces a feeling of comfort during the hot weather because
(A) fan supplies cool air
(B) our body radiates more heat in air
(C) conductivity of air increases
(D) our perspiration evaporates rapidly
(E) None of the above/More than one of the above

3. Twinkling of stars in clear sky during nighttime can be explained with
(A) refraction of light
(B) reflection of light
(C) polarization of light
(D) interference of light
(E) None of the above/More than one of the above

4. Hydrogen bomb is based on the principle of
(A) controlled fusion reaction
(B) uncontrolled fusion reaction
(C) controlled fission reaction
(D) uncontrolled fission reaction
(E) None of the above/More than one of the above

5. Food gets cooked faster in a pressure cooker because
(A) water starts boiling at low temperature due to high pressure
(B) water starts boiling at high temperature due to high pressure
(C) water starts boiling at low temperature due to low pressure
(D) water starts boiling at high temperature due to low pressure
(E) None of the above/More than one of the above

6. If the doors of a refrigerator are left open for few hours, then the room temperature will
(A) decrease
(B) increase
(C) remain the same
(D) decrease only in the area in the vicinity of the refrigerator
(E) None of the above/More than one of the above

7. A piece of ice is floating in a beaker containing water up to its brim. When whole of the ice melts
(A) the water will spill on the floor
(B) the level of water will come down in the beaker
(C) the level of water will first fall and then it will spill out of the beaker
(D) the water level will not change
(E) None of the above / More than one of the above

8. Which of the following is not correctly matched?
(A) Voltmeter-Potential difference
(B) Ammeter-Electric current
(C) Potentiometer-Electromotive force
(D) Galvanometer-Electric resistance
(E) None of the above/More than one of the above

9. If a feather, a rubber ball and a wooden ball are falling freely simultaneously from the same height in vacuum, then
(A) the feather will reach at the ground first
(B) the rubber ball will reach at the ground first
(C) the wooden ball will reach at the ground first
(D) all the three will reach at the ground together
(E) None of the above/More than one of the above

10. When a soap film on the water is seen in the daytime, it shows beautiful colours. This phenomenon is due to
(A) diffraction of light
(B) refraction of light
(C) polarization of light
(D) interference of light
(E) None of the above/More than one of the above

11. The mass number of a nucleus is
(A) the sum of the numbers of neutrons and protons
(B) the total mass of neutrons and protons
(C) always more than the atomic weight
(D) always less than its atomic number
(E) None of the above/More than one of the above

12. Which of the following is the main ingredient of cement?
(A) Limestone
(B) Silica clay
(C) Gypsum
(D) Ash
(E) None of the above/More than one of the above

13. Isotopes of an element differ in
(A) the number of protons
(B) the mass number
(C) the number of electrons
(D) the atomic number
(E) None of the above/More than one of the above

14. The temperature point at which solid, liquid and gaseous states may stay together is known as
(A) boiling point
(B) melting point
(C) freezing point
(D) triple point
(E) None of the above/More than one of the above

15. The most important ore of aluminum
(A) bauxite
(B) calamine
(C) calcite
(D) galena
(E) None of the above/More than one of the above

16. Which among the following solutions has pH value more than 7?
(A) Buffer solution
(B) Basic solution
(C) Acidic solution
(D) Neutral solution
(E) None of the above/More than one of the above

17. Which among the following is an incorrect option?
(A) Atom is electrically neutral due to presence of protons and electrons inside the nucleus
(B) Electrons are negatively charged and have negligible mass.
(C) Atomic number is the number of protons in an atom of an element.
(D) Isotopes are useful as nuclear fuel, in medical field, in carbon dating, etc.
(E) None of the above/More than one of the above

18. Select the incorrect statement out of the following
(A) Cotton is suitable for use as clothing in summer because it absorbs moisture
(B) Polycarbonate is used for making CDs.
(C) Acrylic is also called artificial silk as it is prepared from cotton but has shine like silk.
(D) Teflon is used for coating non-stick Kitchenwares.
(E) None of the above/More than one of the above

19. Which of the following statements about graphite and diamond is true?
(A) They have the same crystal structure.
(B) They have the same hardness.
(C) They have the same electrical conductivity
(D) They can undergo the same chemical reaction.

(E) None of the above/More than one of the above

20. Which of the following is the major constituent of the liquefied petroleum gas?
(A) Methane
(B) Ethane
(C) Propane
(D) Butane
(E) None of the above/More than one of the above

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