Question

Which of the following compounds is not chiral ?

• A. $1$ -chloro- $2$ -methyl pentane
• B. $2$ -chloropentane
• C. $1$ -chloropentane
• D. $3$ -chloro- $2$ -methyl pentane

Answer 1

Answer: (C)

To be optically active, compound or structure should possess a chiral or asymmetric carbon atom.

1- chloropentane

2- chloropentane

1-chloro-2-methyl pentane

3-chloro-2-methyl pentane
$(C^{\ast }=$ asymmetric C-atom)
Hence, 1-chloropentane is not chiral.