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

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

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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