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Chemistry

Chemistry
What is the atomic number of Oxygen

5
22
12
8

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Chemistry
Among the fuels given below, the one with highest calorific value is

Coke
Coal
Natural gas
Wood

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Chemistry
Rusting of iron takes place due to

Carbonation
Exfoliation
Corrosion
Oxidation

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Chemistry
Burning pyrites ore gives out

Sulphur dioxide gas
Carbon dioxide gas
Nitric oxide gas
Nitrogen dioxide gas

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Chemistry
A colloidal system in which a liquid is dispersed in a liquid is called

Sol
Gel
Emulsion
Precipitate

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Chemistry
Neoprene is prepared by polymerisation of which of the following

Acrylonitrile
2-chloro-1, 3-butadiene
2-methyl 1, 3-butadiene
1,3-butadiene

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