Question

who will you prove that air supports burning​

Answer 1

simply burn a wooden splinter outside your room if your splinter burns for aometime .this proves air support burning.(outside room because room contains most concentration of co2)

Answer 2

We can prove that air (oxygen) is essential for combustion or burning by the simplest experiment given below:

Burn a candle.
Cover it with a glass and cut off the O2 supply.
The candle will go out.

By this we can prove that air (O2) is essential for burning or combustion and without air the combusting process can not take place.

Hope it helps.

Wish u luck 4 ur exams buddy!