Assertion : Benzene exhibit tow different bond length , due to C- C single and C = C double bonds .
Reason : Actual structure of benzene is a hybrid of following two structures.

Options

A. Assertion is correct, reason is correct, reason is a correct
explanation for assertion.
B. Assertion is correct, reason is correct, reason is not a correct explanation for assertion
C. Assertion is correct, reason is incorrect
D. Assertion is incorrect, reason is correct.

Answer

A

Explanation

Zinc metal which has a more negative electrode potential than iron will provide electrons in preference of the iron, and therefore corrodes first. Onlywhen all the zinchasbeen oxidised,theironstarttorust.