Identify the gas that is generally produced when coal is burnt in the presence of air.

Carbon Monoxide

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Sulphur Dioxide

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Carbon Dioxide

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Nitrogen dioxide

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Solution

The correct option is C
Carbon Dioxide

Coal is mainly composed of carbon. When coal is burnt in the presence of air, carbon reacts with oxygen gas and produces carbon dioxide gas $(C O_{2})$ . In cases when carbon (coal) is burnt in limited presence of oxygen, carbon monoxide $(C O)$ is produced. But $C O_{2}$ is produced in general cases.

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