Question

Dimethyl ether and ethyl alcohol are ______ of each other.
(A) Mesomers
(B) Functional isomers
(C) Both a and b
(D) None

Answer 1

Hint: Isomers in chemistry are molecules or polyatomic ions that have the same molecular formula — that is, the same number of atoms of each element — but different atomic configurations in space. Isomerism refers to the existence or potential of isomers. Isomers don't always have the same chemical or physical characteristics as one another. Structural or constitutional isomerism, in which the bonds between the atoms differ, and stereoisomerism or spatial isomerism, in which the bonds are the same but the relative locations of the atoms differ, are the two primary types of isomerism.

Complete Step By Step Answer:
The functional groups and atoms in these isomers' molecules are connected in various ways. Because structural isomers may or may not include the same functional group, they are given various IUPAC designations. Functional group isomerism is another name for it. It refers to compounds that have the same chemical formula but various functional groups linked to them, as the name indicates. The chemical molecule $ {{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}{\text{O}} $ is an example of functional isomerism.
Another example is the pair ethanol $ {H_3}C-C{H_2}-OH $ (an alcohol) and dimethyl ether $ {H_3}C-O-C{H_2}H $ (an ether).

When compounds have the same molecular formula but distinct functional groups, this is known as functional isomerism. Functional isomers belong to various homologous series as a result of this.
Alcohols and ethers are the two functional group isomers that you should be aware of.
ketones and aldehydes
Esters and carboxylic acids.

Note:
A hierarchy of isomeric connections exists. Two compounds may have the same constitutional isomer yet are stereoisomers of each other when examined further. Two molecules with the same stereoisomer but distinct conformational forms or isotopologues might be in various conformational forms or be separate isotopologues. The scope of the investigation is determined by the subject of research or the chemical and physical qualities that are of interest.