Which of the following is an open chain organic compound?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Isopentane.
Among the options provided, isopentane is an open-chain organic compound. It has the chemical formula C₅H₁₂ and consists of a linear chain of five carbon atoms.
Benzene and pyridine are aromatic compounds with ring structures, while toluene is an aromatic compound with a benzene ring and a methyl group attached. Therefore, isopentane is the correct choice as it is an open-chain (linear) compound.