Question

All of the following are chain isomers of each other, except one. Which is the exception?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

Isomers with different carbon skeleton (parent chain or side chain) are known as Chain isomers.
To find out chain isomers, First observe the principle carbon chain and then check the alkyl side chain.
so chain isomers of $C_6{H}_{14}$ are

Hence, option B is not a chain isomer of $C_6{H}_{14}$