The softest material in Mho's scale (for measuring hardness) is________________?
Correct answer: A. Talc
- A. Talc
- B. Gypsum
- C. Rubber
- D. None of these
Explanation
On the Mohs hardness scale, talc has the minimum hardness, assigned a value of 1. Gypsum is harder, with a value of 2, while rubber is not part of the standard scale.
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