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1. |
Which of the below given formulas is used to calculate hardness coefficient? |
A. | (Final hardness / initial hardness) 100% |
B. | 20 (loss in weight / 2) |
C. | 20 (loss in weight / 3) |
D. | ((20 loss in weight) / 3) 100% |
Answer» D. ((20 loss in weight) / 3) 100% | |