Q51. What is the solid crust or the hard top layer of the earth called?
[A] Biosphere
[B] Hydrosphere
[C] Lithosphere
[D] Mantle
Q52. In fireworks, the green flame is produced because of
[A] Mercury
[B] Barium
[C] Sodium
[D] Potassium
Q53. The weight of an object will be minimum when it is placed at?
[A] The Equator
[B] The South Pole
[C] The center of the Earth
[D] The North Pole
Q54. The moon is an example of a ____________ object.
[A] transparent
[B] translucent
[C] non-luminous
[D] luminous
750+ General Science Quiz Questions & Answers
Q55. What is the scientific name for washing soda?
[A] Calcium carbonate
[B] Calcium bicarbonate
[C] Sodium carbonate
[D] Sodium bicarbonate
Q56. The mass of the earth is___________
[A] 6×1024kg
[B] 6×1025kg
[C] 6×1022kg
[D] 6×1023kg
Q57. What does airbag, used for safety of car driver, contain?
[A] Sodium nitrite
[B] Sodium bicarbonate
[C] Sodium peroxide
[D] Sodium azide
Q58. The outermost layer of the sun is called
[A] Radiative Zone
[B] Corona
[C] Transition Region
[D] Chromosphere
Q59. What happens when some charge is placed on a soap bubble?
[A] Its radius increases
[B] The bubble Collapses
[C] The bubble expands
[D] Its radius decreases
Q60. What is the first step in the refining of petroleum?
[A] Drilling
[B] Cracking
[C] Distillation
[D] Cooling