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Chemistry

Chemistry
Pyrethrin used in mosquito coil is obtained from

A fungus
A seed plant
A bacterium
An insect

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Chemistry
Which of the following is used as filler in tyre of rubber ?

Coke
Coal
Carbon black
Graphite

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Chemistry
The Bhopal tragedy was caused by the gas

Phosgene
Chlorine
Carbon monoxide
Methyl isocyanate

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Chemistry
Which is not an anasthetic agent in surgical operations?

Chloroform
Nitrous oxide
Ether
Acetone

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Chemistry
Cement is usually a mixture of :

Calcium silicate and calcium aluminate
Calcium aluminate and calcium ferrate
Lime stone and silicon dioxide
Calcium silicate and calcium ferrate

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Chemistry
Nitrogen is an essential constituent of all :

Vitamins
Fats
Proteins
Carbohydrates

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