A grinding wheel is said to be of _________ if it holds the abrasive grains more securely.

A grinding wheel is said to be of _________ if it holds the abrasive

1.	A grinding wheel is said to be of _________ if it holds the abrasive grains more securely.
A.	Soft grade
B.	Medium grade
C.	Hard grade
D.	None of these
Answer» D. None of these

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A grinding wheel is said to be of _________ if it holds the abrasive grains more securely.

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