Question

Consider structures I to VII and answer the question

$I$


$II$

$III$

$IV$

$V$

$VI$

$VII$

Identify the pairs of compounds that represents position isomerism.

Answer 1

Positional isomerism :

Positional isomerism has the same principal chain but differs in position of the locants.

Analysing the given structures :





● Position of alcohol is different.





● Position of the alcohol group is different.



● Position of methoxy group is different.

So, $I$ and $II,III$ and $IV,VI$ and $VII$ are pairs of positional isomers.