Question

1 – Butene and cyclobutane show.

• A. Position isomerism
• B. Ring – chain isomerism
• C. Functional isomerism
• D. Metamerism

Answer 1

Answer: (B)

Ring – chain isomerism

Answer 2

: $CH_{3}CH_{2}CH = CH_{2}$ and $H_{2}\underset{|}{C} - \underset{|}{C}H_{2}$$$H_{2}C - CH_{2}$$

both show ring – chain isomerism.