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Chemistry

Chemistry
Which among the following coal contains 90 per cent of carbon?

Bitumen
Lignite
Anthracite
Peat

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Chemistry
What particles move around the nucleus of an atom and are negatively charged?

Electrons
Neutrons
Positrons
Protons

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Chemistry
'Vinegar' is a commercial name of

Acetic acid
Hydrochloric acid
Citric acid
Oxalic acid

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Chemistry
Which of the following is a commercial source of energy?

Agricultural waste
Natural gas
Dried dung
Sun

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Chemistry
Electric fuse is an alloy of

Carbon and tin
Tin and lead
Zinc and lead
Copper and iron

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Chemistry
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

5
zero
4
2

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