IIT-JEE 2007 · Paper 2 · Chemistry Q34

ChemistryAssertion and reason+3 / -1Question 34 of 66

STATEMENT-1: Molecules that are not superimposable on their mirror images are chiral.

because

STATEMENT-2: All chiral molecules have chiral centres.

Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1

Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1

Statement-1 is True, Statement-2 is False

Statement-1 is False, Statement-2 is True

Answer and worked solution

Official answer: C

Statement 1. Non-superimposability on the mirror image is the definition of chirality. True.

Statement 2. Chiral molecules need not have a chiral centre: suitably substituted allenes and biphenyls are chiral through an axis. False.

(C)

Topics:Optical isomerism and chirality

IIT-JEE 2007 · Paper 2, Chemistry question 34