Question:
The Hardness of Corundum on Moh's scale is
The Hardness of Corundum on Moh's scale is
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On Moh's scale, corundum has hardness \(9\), and diamond has hardness \(10\).
Updated On: May 7, 2026
- \(5\)
- \(6\)
- \(7\)
- \(9\)
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The Correct Option is D
Solution and Explanation
Concept:
Moh's scale of hardness is used to compare the scratch resistance of minerals. It ranges from \(1\) to \(10\).
Step 1: On Moh's scale: \[ \text{Talc}=1 \] and \[ \text{Diamond}=10 \]
Step 2: Corundum is a very hard mineral.
Step 3: Corundum has hardness: \[ 9 \]
Step 4: Therefore, the hardness of corundum on Moh's scale is: \[ \boxed{9} \]
Step 1: On Moh's scale: \[ \text{Talc}=1 \] and \[ \text{Diamond}=10 \]
Step 2: Corundum is a very hard mineral.
Step 3: Corundum has hardness: \[ 9 \]
Step 4: Therefore, the hardness of corundum on Moh's scale is: \[ \boxed{9} \]
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