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Chemistry

Chemistry
The smog is essentially caused by the presence of

O3 and N2
O2 and O3
Oxides of N and S
O2 and N2

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Chemistry
Molality of pure water is

5.55
1.8
55.5
18

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Chemistry
Sour taste of ‘Coca Cola’ is due to the presence of

Hydrochloric acid
Acetic acid
Phosphoric acid
Formic acid

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Chemistry
Highly toxic gas which causes headache, visual difficulty, paralysis and even death is

O3
CO
All of these
CO2

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Chemistry
Which one of the following is known as the 'brown coal'?

Coke
Anthracite
Lignite
Bituminous

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Chemistry
The chemical name of 'Hypo' commonly used in photography is

Sodium thiosulphate
Silver iodide
Sodium nitrate
Silver nitrate

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