Question

Which of the following are not isomers ?

• A. CH₃CH₂CH₂OH and CH₃CH₂CH₂CH₂OH
• B. CH₃CH₂OH and CH₃OCH₃
• C. CH₃CN and CH₃NC
• D.

Answer 1

Answer: (A), (D)

The correct options are
A

CH₃CH₂CH₂OH and CH₃CH₂CH₂CH₂OH

D

Isomers are molecules that have the same molecular formula, but have a different arrangement of the atoms in space. To check whether the compounds are isomers or not let us check whether the molecular formula is same or not.

A: $C_3{H}_{8}O$ and $C_4{H}_{1}0O$ $\to$ Not same

B: $C_2{H}_{6}O$ and $C_2{H}_{6}O$ $\to$ Same

C: $C{H}_{3}CN$ and $C{H}_{3}NC$ $\to$ Same

D: $C_2{H}_{4}NO$ and $C_3{H}_{7}NO$ $\to$ Not same