Question: The correct order of acid character of the following compounds is :
$\mathrm{III}>\mathrm{II}>\mathrm{I}>\mathrm{IV}$
$\mathrm{IV}>\mathrm{III}>\mathrm{II}>\mathrm{I}$
$\mathrm{I}>\mathrm{II}>\mathrm{III}>\mathrm{IV}$
$\mathrm{II}>\mathrm{III}>\mathrm{IV}>\mathrm{I}$
Correct Option: , 4
Solution:
$2>3>4>1$
