Question

Which of the following are pairs of position isomers?

विकल्प

• Pentane and butane

• Butene and but-2-ene

• Propanol and dimethyl ether

• None of these

Answer 1

Butene and but-2-ene

Explanation:

Both have the same molecular formula but differ in the position of the double bond. Therefore, they are position isomers.