KEAM 2017 Physics and Chemistry Paper

Among the acids
(i) Butyric acid
(ii) 2 -chlorobutyric acid
(iii) 3-chlorobutyric acid
(iv) 2 -dichlorobutyric acid
The acidic strength increases on.
(i) Presence of electron with drawing group. (i.e. - I group)
(ii) Closeness of electron withdrawing group from the −COOH groups.
(iii) Number of electron with drawing groups. (i.e. - I group)
Hence, the correct order will be
I<III<II<IV