Question

The type of isomerism shown by the following set of compounds is:

${CH}_{3}C{H}_2{CH}_2{CH}_2{CH}_3,{CH}_3-\stackrel{\underset{|}{{CH}_3}}{CH}-{CH}_{2}C{H}_3,{CH}_3-\stackrel{\underset{|}{{CH}_3}}{\underset{\stackrel{|}{{CH}_3}}{C}}-{CH}_3$

• A. position isomerism
• B. metamerism
• C. ring-chain isomerism
• D. chain isomerism

Answer 1

Answer: (D)

chain isomerism

When two or more compounds have a similar molecular formula but different carbon skeleton, they are called chain isomers and phenomenon is known as chain isomerism.

Since all three compounds have the same molecular formula

($C_5{H}_{12}$) but different carbon skeleton, thus they are chain isomers

Hence, the correct option is $D$.