Question

8. How will you show that air is necessary for combustion? ​

Answer 1

Explanation:

When the burning candle is covered with gas jar, then the candle takes away the oxygen necessary for burning from the air enclosed in the gas jar. ... This proves that air is necessary for combustion of substances.

Answer 2

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Take a candle and fix it on a table. The candle is lighted. The candle will continue to burn due to continuously available fresh air providing the required oxygen for combustion.

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