Question

Is it possible to have combustion without oxygen?

Answer 1

HEY THERE.........
HERE IS YOUR ANSWER..........
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☜☆☞ It would not burn in the classical, combustion sense because as you noted, there is no oxygen present. Paper is a carbon-based material and so it requires oxygen to combust and form products like solid carbon, carbon dioxide, carbon monoxide, etc..

However, combustion is not the only thing that could happen here. In theory, if you heated it enough, you could add enough energy to the paper that the molecules begin to vibrate themselves loose from one another. And you could, in theory, add enough energy that they vibrate themselves apart and begin to decompose. And it's possible to add enough energy that electrons start popping off of them and the paper ionizes.

None of which is burning, but it would result in chemical changes in the paper.

HOPE MY ANSWER HELPS YOU.......
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Answer 2

no without combustion it is not possible. oxygen and air is needed for combustion.