Q. How many of these compounds are more acidic than phenol here.

Formic acid, Benzoic acid, Picric acid, Ethanol, Water, Ortho-nitrophenol, Ortho-cresol, para-nitrophenol, para-cresol

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Answer: 5

Solution:

Formic acid, Benzoic acid, Para-nitrophenol, Picric acid, Ortho-nitrophenol are more acidic than phenol while ethanol, water, ortho and para cresol are less acidic than phenol.