Question

Which of the following is not a combustible substance?

• A. camphor
• B. glass
• C. straw
• D. alcohol

Answer 1

The correct option is B

glass

Explanation for correct option:

B. Glass

Combustible substances:

• “The substance that undergoes combustion is said to be combustible.”
• “A chemical process in which a substance reacts with oxygen to give off heat is called combustion.”
• Examples of combustible materials are camphor, charcoal as well as alcohol.

Non-combustible substances:

• The substances that do not undergo combustion are called non-combustible substances.
• Examples of non-combustible materials are glass as well as stones.

Hence, the correct option is B i.e. Glass is not a combustible material.