Question

What would you observe when a piece of coal is burnt?​

Answer 1

We find that charcoal burns in air. We know that coal, too, burns in air producing carbon dioxide, heat and light. ... A chemical process in which a substance reacts with oxygen to give off heat is called combustion.

Answer 2

Answer:

A combustion reaction takes place which produces CO2 and this happens to be a irreversible reaction.

Hope it helps.