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Q. |
Which of the following statements correct? |
A. | Rockwell scale B in used for hard metals |
B. | Rockwell scale C is used for hard metals |
C. | Rockwell scale C is used for soft metals |
D. | Rockwell scale A is used for hard metals |
E. | None of the above |
Answer» B. Rockwell scale C is used for hard metals |
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