Q. Which of the following is the hardest natural substance?

  • (A) Gold
  • (B) Diamond
  • (C) Iron
  • (D) Quartz
✅ Correct Answer: (B) Diamond
Explanation: Diamond, an allotrope of carbon, is the hardest natural material known.

Published by Sikhar Chaudhary ⭐ 6.79K Points at 06-Oct-2025 06:46 am in Chemistry

Explanation by: Sikhar Chaudhary
Diamond, an allotrope of carbon, is the hardest natural material known.

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