CBSE Class 11 Chemistry Quiz | CBSE Class 11 Chemistry MCQs with Answers

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Questions
101 The chemical used as a fixer in photography is
A sodium sulphate
B borax
C sodium thiosulphate
D ammonium sulphate

Answer: sodium thiosulphate
102 Which variety of glass is heat resistant?
A pyrex glass
B hard glass
C bottle glass
D flint glass

Answer: pyrex glass
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103 Which synthetic fibre is known as artificial silk?
A Rayon
B Terylene
C Nylon
D Cotton

Answer: Rayon
104 Tobacco is preserved from drying out in
A glycerol
B ethanol
C glycol
D acetone

Answer: glycerol
105 Ruby is an oxide of
A aluminium
B platinum
C gold
D silver

Answer: aluminium
106 Aluminium oxide is a/an
A amphoteric acid
B neutral acid
C acidic oxide
D basic oxide

Answer: amphoteric acid
107 Bauxite is an ore of
A aluminium
B iron
C copper
D zinc

Answer: aluminium
108 Periodic table was given by
A Mendeleef
B Arrhenius
C Lavoisier
D Faraday

Answer: Mendeleef
109 Aspirin is
A ethyl salicylate
B methyl salicylate
C sodium salicylate
D acetyl salicylic acid

Answer: methyl salicylate
110 Water drops are spherical because of
A polarity
B viscosity
C surface tension
D density is one

Answer: surface tension
111 The concept of ellipitical orbitals was suggested by
A Sommerfeld
B Rutherford
C Neil Bohr
D Thomson

Answer: Sommerfeld
112 DDT is an
A insecticide
B enzyme
C antibiotic
D explosive

Answer: insecticide
113 Which is used to produce artificial rain?
A silver iodide
B silver nitrate
C copper oxide
D sand

Answer: silver iodide
114 Oil of vitriol is
A sulphuric acid
B phosphoric acid
C hydrochloric acid
D nitric acid

Answer: sulphuric acid
115 Calcium sulphate is known as
A gypsum salt
B potash alum
C epsom salt
D blue vitriol

Answer: gypsum salt
116 Epsom salt is chemically known as
A magnesium sulphate
B copper sulphate
C ferrous sulphate
D copper sulphate

Answer: magnesium sulphate
117 The alcohol used in the preparation of dynamite is
A ethyl alcohol
B glycerol
C methyl alcohol
D glycol

Answer: glycerol
118 The element used in lead pencils is
A carbon
B tin
C zinc
D lead

Answer: carbon
119 Bleaching action of chlorine is by
A oxidation
B reduction
C decomposition
D hydrolysis

Answer: decomposition
120 Nail polish remover contains
A acetone
B petroleum ether
C benzene
D acetic acid

Answer: acetone

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