Question

how will you prove that air is nessesary for combution of fuel ?​

Answer 1

Answer:

Combustion means burning of substance in presence of air.

Explanation:

Burning a candle ..in atmosphere.

And when it is covered by a beaker it ...stops burning. Thus .we conclude that air is necessary for combustion.

Answer 2

Answer:

Fire is a chemical reaction that creates light and heat from oxygen and fuel . A lit candle needs to draw oxygen from the air in order to continue burning. If we limit the air available the candle's flame eventually goes out ones it uses up all the oxygen.

Explanation:

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