In the following compounds, The order of acidity is :

1.	In the following compounds, The order of acidity is :
Answer» `III gt IV gt I gt II` `I gt IV gt III gt II` `II gt I gt III gt IV` `IV gt III gt I gt II` Solution :Electron WITHDRAWING groups (e.g., `NO_(2)`) increases the ACIDITY of phenol. The effect of electron with-drawing group is more, if it is present at o- or p-position. On the othter hand, electron donating groups (e.g., `CH_(3)-`) make it less acidic.

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