Q. 725.0( 1 Vote )

Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
A. Assertion and reason both are correct statements and reason is correct explanation for assertion.

B. Assertion and reason both are correct statements but reason is not correct explanation for assertion.

C. Assertion is correct statement but reason is wrong statement.

D. Assertion is wrong statement but reason is correct statement.

Assertion : The packing efficiency is maximum for the fcc structure.

Reason : The coordination number is 12 in fcc structures.

Answer :

The FCC has maximum packing efficiency of 74% which in case of BCC is 68% and Simple cubic has 52.4%. FCC has coordination number 12. Assertion and reason is correct but reason is not correct explanation of assertion.

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