EARTH SCIENCE
MINERALOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The minerals which could be scrached by finger nail will have hardness between
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3 and 4
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2 and 3
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5 and 6
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none of these
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Explanation:
Detailed explanation-1: -The Mohs Hardness Scale ranks the order of hardness of minerals and some common objects. For example, your fingernail can scratch the minerals talc and gypsum, with a hardness of 2 or lower. A copper penny can scratch calcite, gypsum, and talc.
Detailed explanation-2: -Talc: easily scratched by a fingernail.
Detailed explanation-3: -Your fingernail can scratch gypsum, which has a hardness of 2, but not calcite, with a hardness of 3.
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