The softest material in Mho's scale (for measuring hardness) is (A) Talc (B) Gypsum (C) Rubber (D) None of these

The softest material in Mho's scale (for measuring hardness) is
(A) Talc
(B) Gypsum
(C) Rubber
(D) None of these
by

1 Answer

Answer :

(A) Talc
by

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