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Q.
Among the following the strongest acid is
AIIMSAIIMS 2003Aldehydes Ketones and Carboxylic Acids
Solution:
$C_6H_5COOH$ is the strongest acid. In $m-CH_3OC_6H_4COOH$ and $p-CH_3OC_6H_4COOH$, the $-OCH_3$ group' being electron donating makes benzoic acid weaker.