Question

Which of the following is an isomer of ethanol?

• A. methanol
• B. diethyl ether
• C. acetone
• D. dimethyl ether

Answer 1

The correct option is D

dimethyl ether

Explanation for correct option:

D. dimethyl ether

Isomers:

• “Isomers are two or more compounds that have the same chemical formula but a different arrangement of atoms.”
• As the structures of isomers differ, thus the physical/chemical properties also differ.

Isomers of ethanol:

• Ethanol is a chemical compound with a chemical formula ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$.
• The structure of ethanol is given below:

• The isomer of ethanol is dimethyl ether. The structure of dimethyl ether is shown below:

Hence, the correct option is D i.e. dimethyl ether.