General Chemistry MCQ Solved Paper for SSC CPO

1. A form of carbon which is a good lubricant is
A. diamond
B. coke
C. graphite
D. charcoal
Answer : C

2. Nylon is made from
A. terephthalic acid and ethylene glycol
B. hexamethylene diamine and adipic acid
C. cellulose nitrate
D. cellulose acetate
Answer : B

3. Grape sugar is another name for
A. glucose
B. fructose
C. sucrose
D. maltose
Answer : A

4. Boiler scales' contain
A. calcium carbonate
B. magnesium bicarbonate
C. calcium sulphate
D. magnesium sulphate
Answer : A

5. The percentage of silver in German silver is
A. ten
B. twenty
C. zero
D. fifty
Answer : C

6. Beri-beri is caused by deficiency of Vitamin
A. A
B. C
C. B12
D. B1
Answer : D

7. The oldest known organic compound is
A. urea
B. methane
C. acetic acid
D. benzene
Answer : C

8. Which of the following is not an antibiotic?
A. streptomycin
B. terramycin
C. aureomycin
D. codein
Answer : D

9. Methylated spirit is a mixture of
A. methyl alcohol and acetic acid
B. methyl alcohol and ethyl alcohol
C. ethyl alcohol and pyridine
D. methyl alcohol and pyridine
Answer : B

10. Marble is
A. calcium carbonate
B. sodium carbonate
C. magnesium sulphate
D. ferric chloride
Answer : A

11. Artificial diamonds were produced by
A. Moissan
B. Davy
C. Faraday
D. Marie Curie
Answer : A

12. Galvanising is coating Iron with
A. nickel
B. zinc
C. chromium
D. copper
Answer : B

13. The raw materials used in the manufacture of cement are
A. brimstone and silica
B. limestone and clay
C. brimstone and clay
D. brimstone and limestone
Answer : B

14. On chemical analysis, a bottle cork is found to contain primarily
A. proteins
B. carbohydrates
C. tannins
D. lipids
Answer : B

15. A common rodenticide is (Rat Poison)
A. malathion
B. parathion
C. zinc phosphide
D. diuron
Answer : C

16. Burglar proof safes are made of
A. Tungsten steel
B. Manganese steel
C. Chromium steel
D. Nickel steel
Answer : B

17. Compounds containing only carbon and hydrogen are called
A. carbohydrates
B. carbides
C. hydrocarbons
D. carbonyls
Answer : C

18. Which among the following gases present in the air discolours brass nameplates?
A. Hydrogen Sulphide
B. Nitrogen
C. Carbon-di-oxide
D. Oxygen
Answer : C

19. The pure at form of iron is
A. wrought iron
B. steel
C. pig iron
D. nickel steel
Answer : A

20. BHC is a
A. Rodenticide
B. Herbicide
C. Pesticide
D. Fungicide
Answer : C

21. An important use of nitrous acid is in
A. the manufacture of explosives
B. the manufacture of dyes
C. refrigerators
D. the preparation of drugs
Answer : B

22. Which of the following is used in fuel to propel rockets?
A. Petrol
B. Kerosene
C. Hydrazine
D. Alcohol
Answer : C

23. Hydrogen gas has
A. a very sweet smell
B. a very pungent smell
C. an irritating smell
D. no smell at all
Answer : D

24. Jeweller's rouge is
A. magnetic oxide of iron
B. ferric oxide
C. ferrous oxide
D. ferrous carbonate
Answer : B

25. The science which deals with the chemistry of life processes is known as
A. electrochemistry
B. physical chemistry
C. biochemistry
D. tinctorial chemistry
Answer : C

26. The substance preserved under water is
A. potassium
B. sodium
C. red phosphorus
D. white phosphorus
Answer : D

27. Which of the following is not a chemical change?
A. Rusting of iron
B. Burning of magnesium
C. Sublimation of iodine
D. Electrolysis of water
Answer : C

28. Which of the following is not a food material?
A. silicate
B. protein
C. fat
D. carbohydrate
Answer : A

29. Chloroform used as anaesthetic should be preserved In the dark in tightly stoppered bottles because otherwise
A. it becomes coloured
B. it gets evaporated in air
C. it gets oxidised to phosgene
D. it gets decomposed to chloropicrin
Answer : C

30. Which of the following is a regenerated fibre?
A. Terylene
B. Rayon
C. Nylon
D. Silk
Answer : B

31. An element which is preserved under water is
A. Sodium
B. red phosphorus
C. white phosphorus
D. sulphur
Answer : C

32. Suspended impurities in water are effectively removed by
A. adding milk of lime
B. filtering through sand
C. adding filter alum
D. chlorination
Answer : C

33. The compound or nitrogen used in dry cells is
A. ammonia
B. ammonium nitrate
C. ammonium chloride
D. ammonium nitrite
Answer : C

34. The scientist who synthesised the first organic compound (urea) in the laboratory was
A. Wohler
B. Dalton
C. Lavoisier
D. Fischer
Answer : A

35. Carbogen is used in
A. CO2 poisoning
B. CO poisoning
C. phosgene poisoning
D. anesthesia
Answer : B

36. The most abundant noble gas present in air is
A. neon
B. argon
C. helium
D. krypton
Answer : B

37. The raw materials required for the manufacture of glass are
A. silica, sodium nitrate and soda ash
B. silica, limestone and sodium nitrate
C. silica, sodium oxide and limestone
D. silica, soda ash and limestone
Answer : D

38. The gas evolved when ammonium nitrate is heated is
A. nitrogen
B. nitric oxide
C. nitrogen peroxide
D. nitrous oxide
Answer : D

39. The non-metal which is electropositive is
A. chlorine
B. nitrogen
C. sulphur
D. hydrogen
Answer : D

40. PAS is a drug used In the treatment of
A. tuberculosis
B. cancer
C. typhoid
D. malaria
Answer : A

41. The purest form of carbon is
A. animal charcoal
B. coal
C. wood charcoal
D. sugar charcoal
Answer : D

42. The atomic number of an element represents
A. number of neutrons in the nucleus
B. number of protons and neutrons in the nucleus
C. the valency of the element
D. number of protons in the nucleus
Answer : D

43. Which of the following is a halogen?
A. Radon
B. Astatine
C. Cesium
D. Ruthenium
Answer : B

44. Which of the following metals is the best conductor of heat and electricity?
A. Aluminium
B. Silver
C. Copper
D. Magnesium
Answer : B

45. Iron is coated with zinc to prevent rusting. The process is called
A. annealing
B. tempering
C. calcining
D. galvanising
Answer : D

46. The Combined Gas Law equation is
A. P1V1T1 = P2 V2 T2
B. P1V1T2 = P2V2T1
C. P = P1 + P2 + P3
D. C =
Answer : B

47. The compound of iron used in the manufacture of blue-black ink is
A. ferric chloride
B. ferric sulphate
C. ferric thiocyanate
D. ferrous sulphate
Answer : D

48. Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?
A. Silicon
B. Oxygen
C. Carbon
D. Calcium
Answer : B

49. The earliest name given to nitrogen was
A. dephlogisticated air
B. azote
C. inflammable air
D. marine acid air
Answer : B

50. The Carbon dioxide is absorbed by
A. Palladium
B. NaCI
C. KOH
D. Dilute H2SO4
Answer : C