Which of the following is not a natural abrasive? Options: A . &nbspSilicon carbide B . &nbspQuartz C . &nbspCorundum D . &nbspEmery

Which of the following is not a natural abrasive?

Question

Which of the following is not a natural abrasive?

Options:

A . Silicon carbide

B . Quartz

C . Corundum

D . Emery

Answer: Option A

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