Question: Arrange the following compounds in order of decreasing acidity :
$\mathrm{II}>\mathrm{IV}>\mathrm{I}>\mathrm{III}$
$\mathrm{I}>\mathrm{II}>\mathrm{III}>\mathrm{IV}$
$\mathrm{III}>\mathrm{I}>\mathrm{II}>\mathrm{IV}$
$\mathrm{IV}>\mathrm{III}>\mathrm{I}>\mathrm{II}$
Correct Option: , 3
Solution:
