Question

A penny can scratch an unknown mineral. The mineral _____.
1.must be talc
2.is softer than a diamond
3.is harder than a diamond
4.has perfect cleavage

Answer 1

The correct answer for the question that is being presented above is this one: "2.is softer than a diamond." A penny can scratch an unknown mineral. The mineral is softer than a diamond. Diamond is considered as the hardest mineral and cannot be scratched by any kind penny.

Answer 2

The correct answer is, softer than a diamond.

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