Burning is a chemical process that involves a substance being broken down and changed into different substances so It is.
For the other question you can determine it by it’s reaction to the heat.
<span>Usually, for literal questions there is no one actual answer and it either can include multiple replies or no answers at all, depends on the context. Also, such question can put the listener into an awkward situation so that he would feel mixed and confused, for instance :
''why would Mr. Yallow want to ruin the system?"</span>
