Question

Among the following four structures $I$ to $IV$, it is true that

• A. only I and II are chiral compounds.
• B. only III is a chiral compound.
• C. only II and IV are chiral compounds.
• D. all four are chiral compounds.

Answer 1

Answer: (C)

only II and IV are chiral compounds.

Answer 2

The strength of nucleophile depends upon the nature of alkyl group $R$ on which nucleophile has to attack and also on the nature of solvent. The order of strength of nucleophiles follows the order:
$CN ^{-}> I ^{-}> C _{6} H _{5} O ^{-}> OH ^{-}> Br ^{-}> Cl ^{-}$