Arrange the following acid in order of increasing acidity

1.	Arrange the following acid in order of increasing acidity
Answer» `I gt II gt III gt IV` `II gt III gt I gt IV` `III gt II gt IV gt I` `III gt IV gt II gt I` Solution :Due to ORTHO effect, `o-` nitrobenzoic acid is the strongest acid. Further SINCE electron-with drawing group such as `NO_(2)` INCREASES while the acid strength w.r.t. parent acid. `:.` the over all acidity increases in the order `C lt D lt B lt A`

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