Which gas is required for combustion?

Oxygen

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Nitrogen

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Carbon dioxide

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Hydrogen

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Solution

The correct option is A
Oxygen

Oxygen is required for combustion. If oxygen is not present, the combustion will automatically stop or will not take place. So when a candle is covered with an inverted glass, the candle continues to burn for some time after which it stops burning. This is because oxygen is used up and no more oxygen is left.

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Similar questions

(a) Name a process by which hydrogen gas is manufactured.

(b) Give equations for the reactions.

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