Question

Out of the following, the alkene that exhibits optical isomerism is

• A. 3-methyl-2-pentene
• B. 4-methyl-1-pentene
• C. 3-methyl-1-pentene
• D. 2-methyl-2-pentene

Answer 1

The correct option is C 3-methyl-1-pentene

A chiral compound is a one in which one carbon atom directly connected to four different groups. Chiral compounds with one chiral centre are always optically active. Only 3-methyl-1-pentene has a chiral carbon atom thus it is optical activity. Hence option (c) is correct.