The example for combustible material

The example for non-combustible material

… gas supports combustion.

Fire produced by oil cannot be controlled by

Fuel must be heated to its … temperature before it starts burning.

The outermost zone of candle is … in colour.

… zone of candle is least hot.

The dark zone of candle is … in colour.

The gas needed for combustion among the following is

The lowest temperature at which a substance catches fire is called its

The units of calorific value is

Spirit and petroleum turns into gas at

A chemical process in which material reacts with oxygen present in the air to generate heat is called

The material which undergo combustion is called … material.

The material which does not undergo combustion is called … material.