*$_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 abrasiv

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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