Question

Which of the following pairs are called position isomers:

• A. $C{H}_2\left(OH\right)C{H}_{2}C{O}_{2}H$ & $C{H}_{3}CH\left(OH\right)C{O}_{2}H$
• B. $C_2{H}_{5}OH$ & $C{H}_{3}OC{H}_3$
• C. $(C_2{H}_5{)}_{2}CO$ & $C{H}_{3}C{H}_{2}OC{H}_{2}C{H}_{2}C{H}_3$
• D. All the above

Answer 1

The correct option is A $C{H}_2\left(OH\right)C{H}_{2}C{O}_{2}H$ & $C{H}_{3}CH\left(OH\right)C{O}_{2}H$

Positional isomer are those isomer which have same molecular formula but differs in the position of functional group.

Refer to image

I and II are positional iso mer