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CHEMISTRY

Chemistry
White phosphorus is generally kept under

Alcohol
Kerosene oil
Water
Glycerine

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Chemistry
Which metal is extracted from sea water?

Beryllium
Aluminium
Magnesium
Potassium

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Chemistry
The rusting of iron is a/an

Electrical change
Electrochemical change
Physical change
None of these

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Chemistry
When iron rusts, its weight

Increases
First increases and then decreases
Remains the same
Decreases

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Chemistry
Ozone layer of atmosphere absorbs:

All radiations of Light
Infra-red rays
Ultraviolet rays
Cosmic rays.

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