(i) Graphite and diamond are non-conductors of electricity. |
(ii) Graphite is lighter than diamond. |
(iii) Diamond and graphite burns in oxygen to produce carbon dioxide only. |
(iv) Diamonds can be made artificially by subjecting pure carbon to very low pressure and temperature. |
A) Only (i)
B) Only (ii) and (iv)
C) Only (ii) and (iii)
D) All (i), (ii), (iii) and (iv)
E) None of these
Correct Answer: D
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