1.

Decreasing order of acidic strength of the following compounds is

Answer»

`I gt III gt I gt IV`
`II gt I gt IV gt III`
`I gt III gt IV gt II`
`II gt IV gt I gt III`

Solution :Generally acidic strength `uarr` when electron WITHDRAWING GROUP on phenol (or) Benzene ring &`DARR` electron DONATING group
Based on this the order of acidic strength is


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