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Chemistry

Chemistry
Which one out of the following helps in burning ?

Carbon dioxide
Nitrogen
Oxygen
Carbon monoxide

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Chemistry
The most volatile of the given liquids is

Ether
Liquid He
Liquid
Liquid NH3

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Chemistry
Spirit in contact with body gives cool sensation because it is :

A good conductor
Transparent
Liquid
Highly volatile

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Chemistry
The most pure form of Carbon among the options is

Graphite
Anthracite
Wood Charcoal
Lampblack

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Chemistry
What is the chemical symbol of mercury

Mr
None of these
Mg
Hg

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Chemistry
In electro-refining, the pure metal is deposited on

Electrolyte
Vessel
Anode
Cathode

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