Multiple Choice
What makes emery different from corundum?
A) Impure micro-crystals make up corundum.
B) Impure micro-crystals make up emery.
C) Corundum is almost pure silicate.
D) Emery is almost pure silicate.
E) Nothing; they are actually the same material.
Correct Answer:
Verified
Correct Answer:
Verified
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