Question

Among the following, identify the compound that is not an isomer of hexane: 

• A. 1
• B. 2
• C. 3
• D. 4

Hint:

When identifying isomers, check if the compound is a chain or ring version of the original compound. A ring-chain isomer is not a true chain isomer.

Answer 1

The Correct Option is B

- Hexane is a straight-chain or branched-chain alkane with the formula \(C_6H_{14}\), and it can have several structural isomers. - Option (1) is a straight-chain alkane with 6 carbon atoms, so it is an isomer of hexane. - Option (3) is another form of hexane, with a different branching, and hence it is also an isomer of hexane. - Option (4) is another valid structure that corresponds to an isomer of hexane. - Option (2) shows a cyclic structure, which is not an isomer of hexane. This compound is a ring-chain isomer of hexene and not of hexane. Therefore, the correct answer is: \[ \text{(2) is not an isomer of hexane.} \]