General Science » Exercise – 1
48. The hardest substance available on earth is
(a) Gold
(b) Iron
(c) Diamond
(d) Platinum
Subject Name : General Science |
Exam Name : UPSC, SSC, KVS, NVS, IBPS, RBI, SBI, RRB |
Posts Name : Technical Assistant, Junior Scientist, Post Graduate Teacher, College Lecturer |
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