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Download in pdf Chemistry multiple choice questions(mcqs) & answers. These general awareness quiz objective questions answers include mcqs on ammonial, carbon monoxide etc.
(61)
Which one of the following organic compounds has fruity smell
[A]
Ether
[B]
Ester
[C]
Aldehyde
[D]
Alcohol
Comment
(62)
A substance which readily forms colloidal solution in contact with water is called
[A]
Hydrophobic colloid
[B]
Hydrophilic colloid
[C]
Associated colloid
[D]
Extrinsic colloid
Comment
(63)
Which of the following gases is most toxic
[A]
Chlorine
[B]
Sulphur dioxide
[C]
Carbon monoxide
[D]
Carbon dioxide
Comment
(64)
Water can be separated from alcohol water mixture by
[A]
Sublimation
[B]
Distillation
[C]
Evaporation
[D]
Decantation
Comment
(65)
Vulcanization of rubber is carried out by adding
[A]
Phosphorus
[B]
Ozone
[C]
Carbon
[D]
Sulphur
Comment
(66)
Which gas is used as fire extinguisher
[A]
Carbon monoxide
[B]
Sulphur dioxide
[C]
Carbon dioxide
[D]
Carbon suboxide
Comment
(67)
The lustre of the metal is because of
[A]
High polish
[B]
High density, due to closed pack of atoms
[C]
Absorption of light due to the presence of cavities
[D]
Reflection of light due to the presence of free electrons
Comment
(68)
The major harmful gas emitted by automobile vehicles which causes air pollution is
[A]
Methane
[B]
Ozone gas
[C]
Carbon monoxide
[D]
Carbon dioxide
Comment
(69)
Pasteurization is a process in which milk is heated to
[A]
600C for 10 minutes
[B]
630C for 20 minutes
[C]
630C for 30 minutes
[D]
720C for 10 minutes
Comment
(70)
Ammonial is a mixture of
[A]
Aluminium powder and ammonium nitrate
[B]
Alluminium powder and potassium sulphate
[C]
Aluminium powder and ammonium chloride
[D]
Alluminium powder and ammonium nitrate
Comment
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