IIT-JEE Exam

With respect to graphite and diamond, which of the statement(s) given below is (are) correct ?
(A) Graphite is harder than diamond.
(B) Graphite has higher electrical conductivity than diamond
(C) Graphite has higher thermal conductivity than diamond
(D) Graphite has higher CC bond order than diamond

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IIT-JEE Other Question

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(A) Cl2O (B) Cl2O7 (C) ClO2 (D) Cl2O6 Four fair dice D1, D2, D3 and D4 each having six faces numbered 1,2,3,4,5 and 6 are rolled simultaneously. The probability that D4 shows a number appearing on one of D1, D2 and D