Bihar PCS 63rd Pre Exam 2018 Solved Paper in English

BPSC –  Bihar Public Service Commission Conduct the Joint Prelims Examination (63^rd) – 2018 Question Papers with Answer Key is Available Here – 

Exam – BPSC Pre (63^rd) – 2018
Subject – General Studies
Number Of Questions – 150
Date of Exam  – 01 – July – 2018 

Bihar PCS Prelims Examination (BPCS Pre Exam – 63^rd) – 2018

General Studies 

This Paper Read in Hindi

1. Quartz crystals used in clocks are
(A) Sodium silicate
(B) Silicon dioxide
(C) Germanium dioxide
(D) Titanium dioxide
(E) None of the above/More than one above.

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2. Bromine is a
(A) Colourless gas
(B) Brown solid
(C) Highly inflammable gas
(D) Red liquid
(E) None of the above/More than one above.

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3. Gases used in welding are
(A) Oxygen and hydrogen
(B) Oxygen and nitrogen
(C) Oxygen and acetylene
(D) Hydrogen and acetylene
(E) None of the above/More than one above.

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4. Galvanized iron pipes have a coating of
(A) Zinc
(B) Mercury
(C) Lead
(D) Chromium
(E) None of the above/More than one above.

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5. The wavelength of visible spectrum is in the range
(A) 1300 A-3900 A
(B) 3900 A-7600 A
(C) 7800 A-8200 A
(D) 8500 A-9800 A
(E) None of the above/More than one above.

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6. Detergents used for cleaning clothes are
(A) Carbonates
(B) Bicarbonates
(C) Bismuthates
(D) Sulfonates
(E) None of the above/More than one above.

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7. The element excreted through human sweat is
(A) Sulfur
(B) Iron
(C) Magnesium
(D) Zinc
(E) None of the above/More than one above.

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8. Blue vitriol is chemically
(A) Sodium sulfate
(B) Nickel sulfate
(C) Copper sulfate
(D) Iron sulfate
(E) None of the above/More than one above.

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9. The positively charged part at the centre of the atom is called
(A) Proton
(B) Neutron
(C) Electron
(D) Nucleus
(E) None of the above/More than one above.

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10. The conversation of solid directly into gas
(A) Sublimation
(B) Condensation
(C) Evaporation
(D) Boiling
(E) None of the above/More than one above.

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11. In human system, insulin controls the metabolism of
(A) fats
(B) carbohydrates
(C) proteins
(D) nucleic acids
(E) None of the above/More than one above.

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12. The antibiotic among the following is
(A) penicillin
(B) aspirin
(C) paracetamol
(D) sulfadiazine
(E) None of the above/More than one above.

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13. Which of the following is mostly carbohydrate
(A) Wheat
(B) Barley
(C) Rice
(D) Maize
(E) None of the above/More than one above.

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14. The heaviest metal among the following is
(A) Gold
(B) Silver
(C) Mercury
(D) Platinum
(E) None of the above/More than one above.

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15. Stainless steel is an alloy of
(A) iron and nickel
(B) iron and chromium
(C) copper and chromium
(D) iron and zinc
(E) None of the above/More than one above.

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16. To protect broken bones, plaster of paris is used. It is
(A) slaked lime
(B) calcium carbonate
(C) calcium oxide
(D) gypsum
(E) None of the above/More than one above.

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17. A hydrocarbon in which two carbon atoms are joined by a double bond is called as an
(A) alkane
(B) alkene
(C) alkyne
(D) ionic bond
(E) None of the above/More than one above.

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18. The chemical name of vinegar is
(A) methanol
(B) ethanol
(C) acetic acid
(D) ethyl acetate
(E) None of the above/More than one above.

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19. The acid used in car battery is
(A) acetic acid
(B) hydrochloric acid
(C) nitric acid
(D) sulfuric acid
(E) None of the above/More than one above.

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20. The gas, which comes out on opening a soda water bottle is
(A) carbon dioxide
(B) hydrogen
(C) nitrogen
(D) sulfur dioxide
(E) None of the above/More than one above.

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