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Chemistry

Chemistry
Ozone consists of

Oxygen and Nitrogen
Oxygen only
Oxygen and Carbon
Hydrogen and Carbon

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Chemistry
The aqueous solution of potassium chloride is

A non-electrolyte
Initially weak and then become a strong electrolyte
A weak electrolyte
A strong electrolyte

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Chemistry
The main constituent of natural gas is

Ethane
Butane
Propane
Methane

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Chemistry
Browning of paper in old books is caused by

Lack of aeration
Collection of dust
Oxidation of cellulose
Frequent use

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Chemistry
Acid rain is caused due to emission of which of the following in to the atmosphere ?

Carbon dioxide and carbon monoxide
Ozone and carbon dioxide
Oxides of nitrogen and sulphur
Carbon monoxide and nitrogen

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Chemistry
When there are two electrons in the same orbital, they have:

Same spin
No spin
Opposite spin
Same or opposite spin

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MORE MCQ ON Chemistry

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