Chemistry Mcqs

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Chemistry Mcqs for the preparation of NTS, PPSC, SPSC, BPSC, KPSC, FPSC, OTS and other academic entry test and jobs tests.

 

46. The hardest form of carbon is
(a) Coke
(b) Graphite
(c) Diamond
(d) Charcoal

 

47. The first metal to be used by man was
(a) Aluminium
(b) Copper
(c) Silver
(d) Iron

 

48. The most malleable metal is
(a) Platinum
(b) Silver
(c) Iron
(d) Gold

 

49. The difference between isotopes of an element is due to the presence of a different number of
(a) Protons
(b) Neutrons
(c) Electrons
(d) Photons

 

50. The major constituent of air is
(a) Nitrogen
(b) Carbon dioxide
(c) Oxygen
(d) Hydrogen

 

51. The chief constituent of gobar gas (Bio Gas) is
(a) Methane
(b) Ethane
(c) Propane
(d) Chloride

 

52. The gas used in the manufacture of vanaspati from vegetable oil is
(a) Hydrogen
(b) Oxygen
(c) Nitrogen
(d) Carbon dioxide

 

53. The most reactive among the halogens is
(a) Bromine
(b) Chlorine
(c) Iodine
(d) Fluorine

 

54. Which particle of atom has no charge
(a) Proton
(b) Neutron
(c) Electrons
(d) None of these

 

55. Which are on the outer orbit of an atom
(a) Proton
(b) Neutron
(c) Electrons
(d) None of these

 

56. Stainless steel is an alloy of
(a) Iron, Carbon and Nickel
(b) Iron and Manganese
(c) Iron, Chromium and Zinc
(d) Iron, Chromium and Nickel

 

57. Which particle of atom has a positive charge
(a) Proton
(b) Neutron
(c) Electrons
(d) None of these

 

58. The major component in the LPG is
(a) Butane
(b) Methane
(c) Propane
(d) Ethane

 

59. The main constituent gas of CNG is
(a) Benzene
(b) Ethane
(c) Methane
(d) Butane

 

60. Which of the following; is not a chemical action
(a) Burning of coal
(b) Conversation of water into steam
(c) Digestion of food
(d) Burning of paper

 

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