Among the following four structures I to IV.

it is true that

Options

A. All four are chiral compounds
B. Only I and II are chiral compounds
C. Only III is a chiral compound
D. Only II and IV are chiral compounds

Answer

B

Explanation

A chiral object or compound can be defined as the one that is not superimposable on its mirror image, or we can say that all the four groups attached to a carbon atom must be different. Only I and II are chiral compounds.
I) `C_(2)H_(5)-underset(H)underset(|)overset(CH_(3))overset(|)C-C_(3)H_(7)` II) `CH_(3)CO-underset(H)underset(|)overset(CH_(3))overset(|)C-C_(2)H_(5)`