This video lecture from Group IIIA and Group IVA Elements (F.Sc. second year Chemistry) covers the manufacturing of Borax which is sodium salt of tetra boric acid and exists in hydrated as well as anhydrous form. Boric acid and colemanite react with soda ash to form borax. Heating tincal also yields borax. 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.