This video lecture from Carboxylic Acids (F.Sc. second year Chemistry) covers Fischer esterification reaction in which amino acids form amino ester when treated with an alcohol in the presence of strong acid. Ninhydrin test is employed to detect amino acids and hence finds use in finger print sensors. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.