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Standard XII
Chemistry
Question

Assertion :Carbon has 2 crystalline forms. Reason: This is due to tetravalency of carbon.
  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Assertion is incorrect but Reason is correct

A
Assertion is incorrect but Reason is correct
B
Assertion is correct but Reason is incorrect
C
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
D
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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Solution
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Carbon has a three crystalline forms viz. Diamond, Graphite, and Fullerene.
Also, carbon has a valency of 4. Thus, it is tetravalent.
Thus, the Assertion is incorrect and the Reason is correct.

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