Question

Alkenes with the molecular formula $C_4{H}_8$ does not show :

• A. chain isomerism
• B. geometrical isomerism
• C. position ismerism
• D. optical isomerism

Answer 1

Answer: (D)

optical isomerism

These 4 isomers (alkenes) are possible for the molecular formula C₄H₈ which includes chain isomers like isomer- 1 & 4, geometrical isomers like isomer- 2 & 3 and position isomers like isomer- 2 & 4. But C₄H₈ doesn't show optical isomerism as it doesn't have any chiral carbon which means no carbon is making four bonds with four different groups.

Hence, option D is correct.