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Chemistry

Chemistry
The substance which does not expand on going from liquid state to solid state is

Cast-iron
Water
Aluminium
Type metal

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Chemistry
Which one out of the following helps in burning ?

Carbon monoxide
Oxygen
Nitrogen
Carbon dioxide

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Chemistry
Bleaching powder is used in drinking water as a/an

Coagulant
Antiseptic
Disinfectant
Antibiotic

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Chemistry
Tear gas used by the police to disperse the mob contains

Ammonia
Chlorine
Hydrogen sulphide
Carbon dioxide

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Chemistry
0.01 mole of NaOH is added to 10 liters of water. The pH of water changes by

7
6
3
4

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Chemistry
The gas which emits from rice field is

Ethane
Nitrogen
All of these
Methane

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MORE MCQ ON Chemistry

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