General Science » Exercise – 1
140. Deep blue colour is imparted to glass by the presence of
(a) cupric oxide
(b) nickel oxide
(c) cobalt oxide
(d) iron oxide
| 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 |
| General Science Books |
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