Question

Corundum has achieved which rank on Moh’s scale
(a) 7 (b) 10 (c) 9​

Answer 1

Explanation:

Mohs scale of mineral hardness

For example, corundum (9) is twice as hard as topaz (8), but diamond (10) is four times as hard as corundum.

Answer 2

Answer:

b.10

10 ranks was achieved