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Download in pdf Chemistry multiple choice questions(mcqs) & answers. These general awareness quiz objective questions answers include mcqs on carbon monoxide, ethanol, gunpowder etc.
(71)
The isotope of Uranium used in atomic reactors is
[A]
U235
[B]
U236
[C]
U237
[D]
U232
Comment
(72)
Ethanol containing 5% of water is called
[A]
Power alcohol
[B]
Methylated alcohol
[C]
Denatured spirit
[D]
Rectified spirit
Comment
(73)
Nuclear energy is a mineral based energy source. It is derived from
[A]
Plutonium
[B]
Thorium
[C]
Uranium
[D]
All of the above
Comment
(74)
Zinc sulphide is commonly used as
[A]
Deodorant
[B]
Rodenticide
[C]
Herbicide
[D]
Fungicide
Comment
(75)
Helium gas is used in gas balloons instead of hydrogen gas because of
[A]
More stable
[B]
Lighter than hydrogen
[C]
Non combustible
[D]
More abundant than hydrogen
Comment
(76)
Gunpowder consists of a mixture of
[A]
Sand and TNT
[B]
TNT and charcoal
[C]
Sulphur, sand and charcoal
[D]
Nitre, sulphur and charcoal
Comment
(77)
Carbon monoxide is an inflammable gas. which of the following is also inflammable
[A]
Hydrogen
[B]
Oxygen
[C]
Helium
[D]
Nitrogen
Comment
(78)
One of the constituents of tear gas is
[A]
ether
[B]
ethane
[C]
ethanol
[D]
chloropicrin
Comment
(79)
Silver halide is used in photographic plates because they are
[A]
oxidized in air
[B]
reduced in light
[C]
totally colourless
[D]
soluble in hyposolution
Comment
(80)
Which one of the following is extensively used for sterilizing water
[A]
Alum
[B]
Soda powder
[C]
Borax powder
[D]
Bleaching powder
Comment
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