1. Assertion : Diamond is a precious stone. Reason : Carbon atoms are tetrahedrally arranged in diamond

a. If both assertion and reason are true and the reason is the correct explanation of the assertion

b. If both assertion and reason are true but reason is not the correct explanation of the assertion

c. If assertion is true but reason is false

d. If the assertion and reason both are false

e. if assertion is false but reason is true.

Ans. b

Explanation : It is true that in the diamond structure, carbon atoms are arranged in tetrahedral but it is not the correct explanation of assertion .