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Chemistry

Chemistry
Vulcanization of rubber is carried out by adding

Phosphorus
Carbon
Sulphur
Ozone

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Chemistry
The amount of chlorine available in water after disinfection is called as

Residual chlorine
Combined available chlorine
Free available chlorine
Free chlorine

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Chemistry
The chemical name of quartz is

Sodium silicate
Calcium oxide
Sodium phosphate
Calcium phosphate

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Chemistry
Ozone layer of atmosphere absorbs:

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

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Chemistry
In upper layer of atmosphere ozone is formed by

The combination of oxygen molecules
Subjecting oxygen to high pressure
The action of ultraviolet rays on oxygen
The action of nitrogen on oxygen in atmosphere

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Chemistry
Bauxite is used as raw material by which industry ?

Iron
Aluminium
Gold
Steel

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MORE MCQ ON Chemistry

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