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Coal, when he...

Question

Coal, when heated in air produces:

A

carbon monoxide

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B

carbon dioxide

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C

oxygen

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D

both A and B

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Solution

The correct option is D both A and B
Coal, when burnt in presence of air, produces both carbon monoxide and $C O_{2}$ . For burning or combustion, oxygen is very essential. Air, fuel and heat are the necessary conditions for burning. Burning does not produce oxygen, it requires oxygen.

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