This video lecture from Group VA and Group VIA Elements (F.Sc. second year Chemistry) covers the manufacturing of Sulfuric acid by the contact process. Major stages of the contact process involve combustion, Purification, catalytic oxidation and absorption. All associated chemical reactions are discussed. 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.