1000+ General Chemistry Multiple Choice Question Answer [Solved]

1. A substance used as a fire-extinguisher under the trade name of Pyrene is
A. carbon dioxide
B. chloroform
C. carbon tetrachloride
D. bleaching powder
Answer : C

2. The neutron was discovered by
A. Chadwick
B. Madam Curie
C. Becquerel
D. Aston
Answer : A

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

4. Reduction involves
A. loss of electrons
B. gain of electrons
C. gain of oxygen
D. removal of hydrogen
Answer : B

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

6. Invert sugar is
A. sucrose
B. glucose
C. fructose
D. a mixture of glucose and fructose
Answer : D

7. Stainless steel contains steel and
A. manganese
B. vanadium
C. nickel
D. chromium
Answer : D

8. Rooms in places infected by plague are disinfected using
A. bleaching powder
B. iodoform
C. sulphur dioxide
D. chlorine
Answer : C

9. The kinetic energy of gas molecules
A. is unaffected by temperature variations
B. decreases with increase of temperature
C. increases with decrease of temperature
D. increases with increase of temperature
Answer : D

10. A substance used both as an explosive and as a germicide is
A. phenol
B. TNT
C. picric acid
D. iodoform
Answer : C

11. Cinnabar is an ore of
A. lead
B. zinc
C. mercury
D. chromium
Answer : C

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

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

14. Refined petroleum is decolourised by
A. manganese dioxide
B. bauxite
C. animal charcoal
D. quicklime
Answer : B

15. Galvanising is the process of coating
A. iron with zinc
B. zinc with iron
C. copper with silver
D. silver with gold
Answer : A

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

17. Rusting is a special case of corrosion applied to
A. nickel
B. tin
C. iron
D. chromium
Answer : C

18. Which of the following is a mixture?
A. Baking soda
B. Milk
C. Chloroform
D. Copper wire
Answer : B

19. The fertilizer which has the largest percentage of nitrogen is
A. urea
B. ammonium nitrate
C. ammonium sulphate
D. calcium cyanamide
Answer : A

20. Gasoline is obtained from crude petroleum by
A. fractional distillation
B. fractional crystallisation
C. sublimation
D. evaporation
Answer : A

21. Brine is a solution of
A. sodium chloride in water
B. iodine in alcohol
C. sulphur in carbon disulphide
D. Potassium iodide in water
Answer : A

22. Which among the following is a local anaesthetic?
A. Chloroform
B. Morphine
C. Streptomycin
D. Cocaine
Answer : D

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

24. Which one of the following is used for dry cleaning?
A. Kerosene oil
B. Diesel oil
C. Lubricating oil
D. Petroleum ether
Answer : D

25. Which of the following is not a physical change?
A. Distillation of water
B. Action of heat on potassium chlorate
C. Powdering of glass
D. Burning of an electric lamp
Answer : B

26. 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

27. The scientist associated with the discovery of the nucleus was
A. Rutherford
B. Moseley
C. Niels Bohr
D. J.J. Thomson
Answer : A

28. Radium was isolated from
A. galena
B. dolomite
C. sylvine
D. pitchblende
Answer : D

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

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

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

32. Which of the following is a communicable disease caused by viruses?
A. Cholera
B. Dysentery
C. Diabetes
D. Measles
Answer : D

33. Colour blindness is
A. a congenital disease
B. a communicable disease
C. an acquired disease
D. a contagious disease
Answer : A

34. A metal which occurs 'free' in nature is
A. gold
B. zinc
C. tin
D. molybdenum
Answer : A

35. Which or the following electrolysis?
A. Aluminium
B. Copper
C. Zinc
D. Iron
Answer : A

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

37. Sulphur is readily soluble in
A. Water
B. Alcohol
C. Carbon-di-sulphide
D. Sodium chloride solution
Answer : C

38. Which of the following is a Bleaching agent?
A. Potassium chlorate
B. Hydrogen peroxide
C. Copper sulphate
D. Silver Nitrate
Answer : B

39. In the common soda-acid fire extinguisher, the fire is put out by
A. acid fumes
B. sodium bicarbonate
C. carbon dioxide
D. sodium carbonate
Answer : C

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

41. Glass articles are annealed so that
A. they may appear better
B. they can resist the action of acids and alkalies
C. they lose their brittleness
D. they can withstand temperature shocks
Answer : C

42. Triple Antigen treatment for children is to ward off
A. whooping cough
B. tetanus
C. diphtheria
D. All the three
Answer : D

43. Which of the following is not a metal?
A. Lithium
B. Helium
C. Sodium
D. Cobalt
Answer : B

44. Solid carbon dioxide is used
A. as a drying agent
B. as a refrigerant
C. as an antiseptic
D. as a bleaching agent
Answer : B

45. The function of nitrogen in air is
A. to make air a moderate supporter of combustion
B. to maintain the density of air constant
C. to prevent the hydrogen in air from exploding
D. to reduce the poisonous nature of ozone in air
Answer : A

46. The addition of a neutron to the nucleus of an atom
A. increases the atomic mass of the atom
B. decreases the atomic mass of the atom
C. increases the charge on the nucleus
D. decreases the charge on the nucleus
Answer : A

47. Which or the following gases is soluble in water and Is collected by the downward displacement or air?
A. Carbon dioxide
B. Sulphur dioxide
C. Ammonia
D. Hydrogen
Answer : C

48. The compound which is both an antiseptic and a disinfectant is
A. phenol
B. iodoform
C. bleaching powder
D. blue vitriol
Answer : A

49. White vitriol is
A. ZnSO4 . 7H2O
B. FeSO4 . 7H2O
C. MgSO4 . 7H2O
D. CaSO4 . 2H2O
Answer : A

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