Question

7. Explain why air is needed for burning.
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Answer 1

Answer:

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Explanation:

Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.).

Answer 2

ANSWER

Air is necessary for burning. As no air would mean no oxygen and therefore no supporter of combustion which will not allow anything to catch fire