Multiple choice

Which scale is used to test hardness of minerals?

  1. Moh's scale

  2. Chromatic scale

  3. Mercalli scale

  4. Richter scale

  5. Pentatonic scale

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A Correct answer
Explanation

The Moh's scale of mineral hardness characterises the scratch resistancy of various minerals through the ability of a harder material to scratch a softer material.