STATEMENT-1 : Molecules that are not superimposable on their mirror images are chiral.
because
STATEMENT-2 : All chiral molecules have chiral centres.
because
STATEMENT-2 : All chiral molecules have chiral centres.
- (A)Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1
- (B)Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1
- (C)Statement-1 is True, Statement-2 is False✓ Correct
- (D)Statement-1 is False, Statement-2 is True
Answer: (C)
Solution
Statement-1 is true: by definition, molecules that are not superimposable on their mirror images are chiral. Statement-2 is false: not all chiral molecules have chiral centers (asymmetric carbon atoms). Some molecules exhibit chirality due to other structural features such as axial chirality (allenes, biphenyls) or planar chirality, without having a chiral center. Therefore, Statement-2 is false.
JEE Advanced · 2007 · 08 Apr 2007 · Paper 2 · Single correct option