(A) All compounds containing an odd number of nitrogen atoms have odd masses and those which contain even number of nitrogen atoms have even masses. (R) Nitrogen rule can be applied to both aliphatic and aromatic compounds.

(A) All compounds containing an odd number of nitrogen atoms have odd

1.	(A) All compounds containing an odd number of nitrogen atoms have odd masses and those which contain even number of nitrogen atoms have even masses. (R) Nitrogen rule can be applied to both aliphatic and aromatic compounds.
Answer» If both assertion and reason are correct and reason is the correct EXPLANATION of the assertion If both assertion and reason are correct but reason is not the correct explanation of the assertion If assertion is correct but reason is incorrect If assertion is incorrect but reason is correct ANSWER :B