General Chemistry
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122 Which of the following alkali metals has highest specific heat?
A
Caesium
B
Rubidium
C
Potassium
D
Lithium
124 Which one of the following is used as a sowing agent in the preparation of soft drinks?
A
Phosphoric acid
B
Phosphorus acid
C
Salicylic acid
D
Boric acid
126 The polymerisation of which of the following is used in manufacturing of polythene in industry ?
A
Methane
B
Styrene
C
Acetylene
D
Ethylene
127 Sea water can be purified by the process of :
A
distillation
B
evaporation
C
filtration
D
fractional distillation
128 Radioactive disintegration of uranium ultimately results in formation of :
A
radium
B
thorium
C
polonium
D
lead
129 Cloud is a colloidal dispersion of :
A
Air in a dispersion medium
of water
B
Fog in a dispersion medium
of water
C
Mist in a dispersion medium
of air
D
Water drops in a dispersion
medium of air