The presence of ________ in the air controls the process of burning.

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Solution

Nitrogen gas
It is a colourless, odourless, tasteless and non-toxic gas.
The presence of nitrogen gas in the air controls the process of burning.
It is nonflammable and it will not support combustion.
When nitrogen is exposed to a flame, it does not decompose or produce any by-products.
Hence, the presence of nitrogen gas in the air controls the process of burning.

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