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General Science

General Science
In vulcanisation, natural rubber is heated with

Phosphorous
Sulphur
Carbon
Silicon

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General Science
AIDS is caused by:

Virus
Helminth
Fungus
Bacteria

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General Science
Which metal pollute the air of a big city?

Copper
Lead
Cadmium
Chromium

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General Science
The average salinity of sea water is

3.5%
3%
3.5%
4%

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General Science
The type of glass used in making lenses and prisms is

Pyrex glass
Jena glass
Flint glass
Soft glass

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General Science
Potassium Permanganate is used for purifying drinking water, because

None of the listed here
It is a reducing agent
It is a sterilising agent.
It is an oxidising agent.

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