Question

The compound which is not isomeric with diethyl ether is

• A. n-propyl methyl ether
• B. butan-1-ol
• C. 2-methylpropan-2-ol
• D. butanone

Answer 1

The correct option is D butanone

Isomers are different compounds having same molecular formula. Molecular formula of diethyl ether is $C_4{H}_{10}O.$

Molecular formula of n-propyl methyl ether is $C_4{H}_{10}O.$
Molecular formula of butan-1-ol is $C_4{H}_{10}O.$
Molecular formula of 2-methylpropan-2-ol is $C_4{H}_{10}O.$
Molecular formula of butanone is $C_4{H}_{8}O.$

Hence, the correct answer is option (d).