A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance?
  1. Iron nail
  2. Glass
  3. Stone piece
  4. Wood

AcademicChemistryNCERTClass 8

Correct Answer: (d) Wood

Explanation: Wood is a combustible substance. It is a solid fuel and produces smoke during combustion.

Updated on 10-Oct-2022 13:25:41