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Free download in PDF CBSE class 11 Chemistry MCQs & Answers. Here Gkseries provide Chemistry Solve Questions and Answers for CBSE class 11 Students.
81
The concept of an electrolyte in water was described by
[A]
Arrhenius
[B]
Debye
[C]
Faraday
[D]
Ohm
82
The acid present in lemon is
[A]
citric acid
[B]
tartaric acid
[C]
lactic acid
[D]
marlic acid
83
The solute in a solution can be separated by
[A]
decantation
[B]
evaporation
[C]
filtration
[D]
sedimentation
84
The major constituent of air is
[A]
Nitrogen
[B]
Oxygen
[C]
Carbon dioxide
[D]
Hydrogen
85
The chief source of aluminium is
[A]
Feldspar
[B]
Cargolite
[C]
Bauxite
[D]
Haematite
86
Another name for mercurous chloride is
[A]
Plaster of paris
[B]
Blue vitriol
[C]
Amalgam
[D]
Calomel
87
Cooking oil can be converted into vegetable ghee by the process of
[A]
Distillation
[B]
Hydrogenation
[C]
Oxidation
[D]
Crystallization
88
Charcoal is
[A]
Hygroscopic
[B]
Amorphous
[C]
Crystalline
[D]
None of these
89
Who discovered radioactivity?
[A]
Henri Becquerel
[B]
John Dalton
[C]
Roentgen
[D]
Marie Curie
90
Which one among the following is used as a moderator in nuclear reactors?
[A]
Heavy water
[B]
Hydrogen peroxide
[C]
Heavy hydrogen
[D]
Ozone
91
Which of the following substance is highly plastic?
[A]
Clay
[B]
Granite
[C]
Quartz
[D]
Mica
92
Carbon occurs in nature in the purest form as
[A]
Diamond
[B]
Graphite
[C]
Carbon black
[D]
Coal
93
A polymeric substance used to make parachute is
[A]
Viscose
[B]
Terylene
[C]
Rayon
[D]
Cotton
94
Which variety of coal contains the highest percentage of carbon?
[A]
Lignite
[B]
Peat
[C]
Anthracite
[D]
Bituminous
95
The oxide of Nitrogen used in medicine as anaesthetic is
[A]
Nitrogen pentoxide
[B]
Nitrous oxide
[C]
Nitrogen dioxide
[D]
Nitric oxide
Answer: Nitrogen pentoxide
96
Which one of the following metals is found in plaster of paris?
[A]
Sodium
[B]
Calcium
[C]
Magnesium
[D]
Pottasium
97
The major ingrediation of leather is
[A]
Collagen
[B]
nuclei acid
[C]
Carbohydrate
[D]
Polymer
98
Which one of the following types of glass can cut off ultraviolet rays?
[A]
crookes glass
[B]
jena glass
[C]
pyrex glass
[D]
soda glass
99
Select the one which is not a mixture?
[A]
Distilled water
[B]
LPG
[C]
Gasoline
[D]
Air
100
What is the most common soil in sea water?
[A]
Magnesium sulphate
[B]
Calcium carbonate
[C]
Sodium chloride
[D]
Potassium chloride
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