Question:

The hardest natural substance is:

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Diamond is the hardest known material with a Mohs hardness of 10.
Updated On: Oct 27, 2025
  • Silver
  • Gold
  • Diamond
  • Iron
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The Correct Option is C

Solution and Explanation

Diamond is the hardest natural substance due to its strong covalent bonding in a three-dimensional tetrahedral structure.Thus, the correct answer is \( \mathbf{(C) Diamond} \).
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