| Which of the following code is correct regarding allotrops of carbon? |
| I. Carbon exist in more than one allotropic form |
| II. Diamond is semiconductor while graphite is conductor |
| III. Diamond has layered structure while graphite has tetrahedral structure |
| IV. Diamond is non-conductor of electricity |
A) I and II are correct
B) II and III are incorrect
C) I and IV are incorrect
D) All are correct
Correct Answer: B
Solution :
Diamond is non-conductor while graphite is conductor. Diamond has tetrahedral structure while graphite has layered structure.
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