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%This question was posed to me in an online interview.Enquiry is from Tests on Stones topic in portion Materials for Construction of Basic Civil Engineering

Answer»

The CORRECT choice is (C) 20 – (LOSS in weight / 3)

The best EXPLANATION: The coefficient of hardness is expressed as a number and not a percentage.



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