Question

I want procedure to prove oxygen is needed for burning

Answer 1

Materials required:
☆Candle
☆Match stick
☆A glass tumbler.
☆A bowl.

Procedure:
☆Match a candle and place it on the bowl.
☆Keep the glass tumbler upside down on the candle.

Observation: You will find that after some time the candle would stop burning.

Conclusion: This is due to the absence of oxygen (O2). So we can come to a conclusion that OXYGEN IS REQUIRED FOR BURNING.

HOPE IT HELPS YOU.... ☺☺☺☺☺

Answer 2

take a candle and light it with fire .observe the fire burning. then take a glass vessel and close the candle.you observe that the fire exhausts immediately. this proves oxygen is needed for burning.