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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Priyanshu kumar
3>4>1>2 is the acidity order Explanation:- Acidity is directly proportional to -I effect and inversely proportional to +I effect and also inductive effect decreases with increase in distance.. So 3rd is most acidic followed by 4th as it contain No2 group which shows -I effect and in 4th -I effect is less than 2nd. 2nd is least acidic as there is methyl group which show +I effect