HARDNESS_CAN_BE_MEASURED_USING________?$

1.	HARDNESS_CAN_BE_MEASURED_USING________?$
A.	Mohr‚Äö√Ñ√∂‚àö√ë‚àö¬•s scale
B.	Silica scale
C.	Dalton‚Äö√Ñ√∂‚àö√ë‚àö¬•s scale
D.	Abrasion factor
Answer» B. Silica scale

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