Consider the acidity of carboxylic acids i.Ph - COOH ii. o - NO2 C6H4COOH iii. p - NO2 C6H4COOHiv. m - NO2 C6H4COOH which of the following order is correct
-NO2 group is deactivator and increases acidic nature and in ortho¶ position involved in resonance but not in meta position