Question 194 of 512

The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of 

(a) acyl chloride>acid anhydride>ester>amide

(b) ester>acyl chloride>amide> acid anhydride

(c) acid anhydride> amide>ester>acyl chloride

(d) acyl chloride>ester>acid anhydride>amide