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Chemistry

Chemistry
The main source of Naphthalene is

Diesel
Camphor
Charcoal
Coal-tar

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Chemistry
Which gas is used as fire extinguisher ?

Carbon dioxide
Carbon monoxide
Carbon suboxide
Sulphur dioxide

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Chemistry
The gas causing acid rain in an industrial area is

Sulphur dioxide
Carbon monoxide
Carbon dioxide
Methane

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Chemistry
Identify the metal which is non toxic in nature.

Cobalt
Chromium
Gold
Cadmium

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Chemistry
How many atoms of oxygen are in a glucose molecule

10
4
3
6

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Chemistry
The percentage of Nitrogen in Air is

0.03
85.02
78.03
0.94

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MORE MCQ ON Chemistry

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