Question

$2-$ $pentanone$ and $3-$ $pentanone$ are:

• A. Chain isomers
• B. Tautomers
• C. Metamers
• D. Positional isomers

Answer 1

The correct option is D Positional isomers

$2-pentanone$ $3-pentanone$

(Refer to Image 1) (Refer to Image 2)

As position of keto group is different in both cases so, it is positional isomer.