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Chemistry

Chemistry
Oxygen has (+) oxidation number only in

N2O
OF2
C12O
H2O (2)

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Chemistry
Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?

Nitrous oxide
Chlorofluorocarbons
Sulphur dioxide
Carbon dioxide

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Chemistry
Emulsifier is an agent which

Accelerates the dispersion
Aids the flocculation of emulsion
Stabilizes an emulsion
Homogenizes the emulsion

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Chemistry
The property of hydrogen which distinguishes it from alkali metals is

Its electropositive character
Its affinity for non-metal
Its non-metallic character
Its reducing character

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Chemistry
Which of the following contains high content of lead?

Coal
Cooking gas
High octane fuel
Low octane fuel

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Chemistry
A non-electronic conductor is

None of these
Gas Carbon
Iron
Copper Sulphate

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