Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
The allotropic forms of carbon, good conductor of electricity are (1) diamond (2) graphite (3) fullerenes (4) gas carbonA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: C
Solution :
Graphite and gas carbon are good conductors of electricity. The\[\pi -\]electron within the layer are free to move and thus graphite is a good conductor of electricity. Note: Gas carbon is a good conductor of electricity. It is obtained as a black hand deposit on the roofs and sides of retorts in coal gas industry.
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