MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistryCarboxylic Acids and DerivativesPreparation of Carboxylic Acid Derivatives

A is (a) (b)

C.Both are correct

D.None is correct✓ Correct

Explanation

127. Acid hydrolysis of an ester is reversible because : (a) alcohol and acid react together to form ester (b) protonation of ester makes carbonyl carbon more reactive for nucleophilic attack (c) proton being strong nucleophile, favours hydrolysis (d) H3O+ is a nucleophile as well as electrophile 3 H O is a nucleophile as well as electrophile so hydrolysis of an ester is reversible. 128. In the reaction sequence : 3 2 2 2 LiAlH O Bu SOCl 3 2 HOCH CH OH CH CH COOH A B C -> -> -> ‘C’ is most likely to be : (a) (b) (c) CH3CH2CHO (d) Carboxylic Acid and Its Derivatives 24 129. A

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