RE-NEET 2026 Chemistry Isomerism MCQ Question

In this reaction sequence, K and L are derived from the same alkene, which undergoes hydrogenation. The presence of different substituents around the double bond in K and L leads to the formation of geometrical isomers (cis and trans).

Geometrical isomers arise due to restricted rotation around the double bond, resulting in different spatial arrangements of groups. In this case, K and L exhibit such differences, confirming they are geometrical isomers.

The other options fail because:

• A) Enantiomers require chiral centers, which K and L do not have.
• B) M and N are not geometrical isomers as they differ in connectivity, not just spatial arrangement.
• C) While M and N are stereoisomers, the specific relationship of K and L as geometrical isomers is the focus here.