1000+ General Chemistry Multiple Choice Question Answer [Solved]

1. Which one of the following metals is used to extract another metal?
A. Lead
B. Tin
C. Zinc
D. Aluminium
Answer : D

2. The human body contains about
A. 50% water
B. 10% water
C. 70% water
D. 20% water
Answer : C

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

4. Water always contains hydrogen and oxygen in the ratio 1:8 by weight. This is in accordance with the
A. Law of Multiple Proportions
B. Law of Definite Proportions
C. Law of Conservation of Mass
D. Law of Reciprocal Proportions
Answer : B

5. Lead pencils contain
A. white lead
B. graphite
C. red lead
D. coke
Answer : B

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

7. Oil of winter green contains
A. acetone
B. ether
C. acetic acid
D. methyl salicylate
Answer : D

8. Penicillin was discovered by
A. Alexander Fleming
B. Sir JJ Thomson
C. Dr Nessler
D. Sir John Russel
Answer : A

9. 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

10. Which of the following types of water gives lather easily with soap?
A. Hard water
B. Heavy water
C. Soft water
D. Both (a) and (b)
Answer : C

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

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

13. Which of the following cannot be used for the preparation of soap?
A. oleic acid
B. acetic acid
C. palmitic acid
D. stearic acid
Answer : B

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

15. Which of the following is used as an illuminant?
A. Gasoline
B. Benzoline
C. Kerosene
D. Petroleum ether
Answer : C

16. Nitrous oxide used as anaesthetic is usually mixed with
A. ethyl alcohol
B. chloroform
C. oxygen
D. methyl alcohol
Answer : C

17. The compounds produced by plants in the process of photosynthesis are
A. carbohydrates
B. proteins
C. salts
D. fats
Answer : A

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

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

20. Heavy water was discovered by
A. TW Richards
B. FW Aston
C. Stas
D. Urey
Answer : D

21. When ants bite, they inject
A. glacial acetic acid
B. methanol
C. formic acid
D. stearic acid
Answer : C

22. Ascorbic acid is the chemical name for
A. Vitamin B6
B. Vitamin C
C. Vitamin K
D. Vitamin D
Answer : B

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

24. A drug that is usually administered for malaria is
A. sulphanilamide
B. quinine
C. methicillin
D. novocaine
Answer : B

25. The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as
A. annealing
B. hardening
C. quenching
D. tempering
Answer : B

26. The simplest hydrocarbon is
A. benzene
B. methane
C. ethane
D. butane
Answer : B

27. In the making of jewels, gold is usually mixed with
A. zinc
B. tin
C. copper
D. aluminium
Answer : C

28. The iron salt used in blue prints is
A. ferric sulphate
B. ferric oxalate
C. ferric nitrate
D. ferric chloride
Answer : B

29. Even as early as 3000 BC glass was known to the
A. Europeans
B. Egyptians
C. Asians
D. Americans
Answer : B

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

31. Solder is an alloy of
A. tin and copper
B. tin and lead
C. tin and zinc
D. tin, copper and zinc
Answer : C

32. Which among the following is a metalloid?
A. Tin
B. Silver
C. Iodine
D. Arsenic
Answer : D

33. The commonest ore of aluminium is
A. cryolite
B. bauxite
C. malachite
D. azurite
Answer : B

34. 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

35. Isotopes differ in the number of
A. Protons
B. Neutrons
C. Electrons
D. Protons and electrons
Answer : B

36. Which of the following process involves removal of the elements of water?
A. Hydrolysis
B. Hydrogenation
C. Dehydration
D. Dehydrogenation
Answer : C

37. The noble gas which is present in microscopic quantities in air is
A. xenon
B. krypton
C. argon
D. helium
Answer : A

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

39. 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

40. The Long Form of the Periodic Table is based on
A. atomic number
B. valency
C. atomic mass
D. atomic radius
Answer : A

41. Flint glass contains
A. potassium and lead silicates
B. zinc and barium borosilicates
C. potassium and calcium silicates
D. sodium and calcium silicates
Answer : A

42. Calamine is a ore of
A. tine
B. magnesium
C. zinc
D. copper
Answer : C

43. Which of the following elements is not required for the healthy growth of plants?
A. Nitrogen
B. Phosphorus
C. Potassium
D. Mercury
Answer : D

44. ________ is left behind after distillation of petroleum.
A. Arsenic
B. Barium
C. Benzene
D. Bitumen
Answer : D

45. The main constituent of gobar gas is
A. methane
B. nitrogen
C. carbondioxide
D. ethylene
Answer : A

46. The sugar which is used in silvering mirrors is
A. sucrose
B. maltose
C. glucose
D. fructose
Answer : C

47. Gold dissolves in aqua regia due to the formation of
A. chloro auric acid
B. auric chloride
C. gold nitrate
D. aurous chloride
Answer : A

48. Which of the following is not a chemical change?
A. Burning of magnesium ribbon in air
B. Distillation of water
C. Heating of cane sugar
D. Setting of cement
Answer : B

49. Smelling salt contains
A. ammonium chloride
B. ammonium carbonate
C. ammonium sulphate
D. potassium nitrate
Answer : B

50. What is 'oxygen mixture'?
A. A mixture of potassium nitrate and carbon
B. A mixture of ammonium chloride and sodium nitrate
C. A mixture of potassium chlorate and manganese dioxide
D. A mixture of ammonium nitrate and charcoal
Answer : C