Question

The substance which burn in air are called combustible

Answer 1

Answer:

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. The substance that undergoes combustion is said to be combustible.

Answer 2

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True statement✓

Explanation:

The substance which burn in air are called combustible substance.

Example - wood, coal,Paper, cloth, cooking gas (LPG), CNG, Kerosene oil, wood,etc

The substance which doesn't undergo combustion are called non-combustible substance.

Example - stone, cement, bricks, water, etc.