Question

the _______ zone in a candle flame is the zone of non combustain​

Answer 1

$\huge\tt\pink{\boxed{\tt{\blue{★\:Answer}}}}$

Innermost zone is the zone of no combustion. It is also called as dark zone which is formed around the wick of the candle flame.

Answer 2

Dark zone

It's the innermost part of the candle flame....