For each the following amines (a though D) ,Exhaustive methylation (treatment with excess mrthy iosdile ) folloeing by hoffmann elimination (heating with AgOH) ,repesated as necssary , removes the niotrogen atomin the form to reamove the ntirogen aatom in the form of trmethylamine .In dicatte the number of respetivet Hoffmann eliinataion required toi reamove the nitrogen by a number (1to 4) in the desihnsataead answer sheet .

Explanation

Number of C-N bond equal ot number of hoffmann exhutive elimaination