Question 26 of 35 Corundum is the second-hardest mineral on Mohs' hardness scale. How does this property make corundum useful to humans? A. It means corundum can be used to make fireworks yellow. B. It

Question 26 of 35

Corundum is the second-hardest mineral on Mohs' hardness scale. How does
this property make corundum useful to humans?
A. It means corundum can be used to make fireworks yellow.
B. It means corundum can be used to flavor foods.
C. It means corundum can be used as pencil lead.
D. It means corundum can be used to grind down and shape
fingernails.

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