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Q: For what is Mohs scale used?
  • A. To measure brightness of a substance
  • B. To measure viscosity of a liquid
  • C. To measure elasticity of a material
  • D. To measure hardness of minerals
Correct Answer: Option D - The mohs scale is used to measure the hardness of minerals. It was first made by the German geologist and mineralogist friedrich mohs in 1812.
D. The mohs scale is used to measure the hardness of minerals. It was first made by the German geologist and mineralogist friedrich mohs in 1812.

Explanations:

The mohs scale is used to measure the hardness of minerals. It was first made by the German geologist and mineralogist friedrich mohs in 1812.