Question

A compound with the same molecular formula exists in two forms one is alcohol and the other is Ether, what type of isomerism does it show?

(a) metamerism

(b) positional isomerism

(c) functional isomerism

(d) chain isomerism

I had been asked this question in an online quiz.

The origin of the question is Organic Chemistry in section Organic Chemistry – Basic Principles and Technique of Chemistry – Class 11

Answer 1

The correct choice is (c) functional isomerism

The explanation: Functional isomerism arises when two or more compounds having the same molecular formula but the different functional group. An example is that C3H6O represents an aldehyde as well as a Ketone, therefore we can say that the above compound which is alcohol, as well as Ether, shows functional isomerism.