Molecules whose mirror image is non-superimposable over them are known as chiral. Which of the following molecules is chiral in nature?A. 2-bromobutaneB. 1-bromobutaneC. 2-bromopropaneD. 2-bromopropan-2-ol

To determine whether a molecule is chiral or not, we can examine its stereochemistry and look for the presence of a chiral center. A chiral center is a carbon atom bonded to four different substituents.

Let's analyze the given molecules:

A. 2-bromobutane: This molecule does not have a chiral center as the central carbon atom is bonded to two methyl groups, one ethyl group, and one bromine atom. It is not chiral.

B. 1-bromobutane: This molecule does not have a chiral center as the central carbon atom is bonded to three hydrogen atoms and one bromine atom. It is not chiral.

C. 2-bromopropane: This molecule does not have a chiral center as the central carbon atom is bonded to three hydrogen atoms and one bromine atom. It is not chiral.

D. 2-bromopropan-2-ol: This molecule has a chiral center because the carbon atom in the middle is bonded to a hydrogen atom, a hydroxyl group (-OH), a methyl group, and a bromine atom. Therefore, it is chiral.

So, the correct answer is D. 2-bromopropan-2-ol.