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

Questions

101 The chemical used as a fixer in photography is

A sodium sulphate

B borax

C sodium thiosulphate

D ammonium sulphate

View Answer

Answer: sodium thiosulphate

102 Which variety of glass is heat resistant?

A pyrex glass

B hard glass

C bottle glass

D flint glass

View Answer

Answer: pyrex glass

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103 Which synthetic fibre is known as artificial silk?

A Rayon

B Terylene

C Nylon

D Cotton

View Answer

Answer: Rayon

104 Tobacco is preserved from drying out in

A glycerol

B ethanol

C glycol

D acetone

View Answer

Answer: glycerol

105 Ruby is an oxide of

A aluminium

B platinum

C gold

D silver

View Answer

Answer: aluminium

106 Aluminium oxide is a/an

A amphoteric acid

B neutral acid

C acidic oxide

D basic oxide

View Answer

Answer: amphoteric acid

107 Bauxite is an ore of

A aluminium

B iron

C copper

D zinc

View Answer

Answer: aluminium

108 Periodic table was given by

A Mendeleef

B Arrhenius

C Lavoisier

D Faraday

View Answer

Answer: Mendeleef

109 Aspirin is

A ethyl salicylate

B methyl salicylate

C sodium salicylate

D acetyl salicylic acid

View Answer

Answer: methyl salicylate

110 Water drops are spherical because of

A polarity

B viscosity

C surface tension

D density is one

View Answer

Answer: surface tension

111 The concept of ellipitical orbitals was suggested by

A Sommerfeld

B Rutherford

C Neil Bohr

D Thomson

View Answer

Answer: Sommerfeld

112 DDT is an

A insecticide

B enzyme

C antibiotic

D explosive

View Answer

Answer: insecticide

113 Which is used to produce artificial rain?

A silver iodide

B silver nitrate

C copper oxide

D sand

View Answer

Answer: silver iodide

114 Oil of vitriol is

A sulphuric acid

B phosphoric acid

C hydrochloric acid

D nitric acid

View Answer

Answer: sulphuric acid

115 Calcium sulphate is known as

A gypsum salt

B potash alum

C epsom salt

D blue vitriol

View Answer

Answer: gypsum salt

116 Epsom salt is chemically known as

A magnesium sulphate

B copper sulphate

C ferrous sulphate

D copper sulphate

View Answer

Answer: magnesium sulphate

117 The alcohol used in the preparation of dynamite is

A ethyl alcohol

B glycerol

C methyl alcohol

D glycol

View Answer

Answer: glycerol

118 The element used in lead pencils is

A carbon

B tin

C zinc

D lead

View Answer

Answer: carbon

119 Bleaching action of chlorine is by

A oxidation

B reduction

C decomposition

D hydrolysis

View Answer

Answer: decomposition

120 Nail polish remover contains

A acetone

B petroleum ether

C benzene

D acetic acid

View Answer

Answer: acetone

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