Question

Among the following, the correct statement concerning the optical activity is:

• A. A molecule containing two or more chiral centres is always optically active.
• B. A molecule containing just one chiral centre is always optically active
• C. A molecule possesing plane of symmetry is optically active
• D. An optically active molecule should have at least one chiral centre

Answer 1

The correct option is B A molecule containing just one chiral centre is always optically active

A molecule containing $2$ or more chiral centers can be meso compound and becomes optically inactive.
A molecule possessing plane of symmetry will be optically inactive.
Allenes, biphenyls etc having no chiral centre are optically active.
A molecule containing one chiral centre is always optically active.
A meso compound should contain two or more identical substituted stereocenters.