This video lecture from Group IIIA and Group IVA Elements (F.Sc. second year Chemistry) covers physical properties of Borax. Borax is a white crystalline compound and is partially soluble in water and its solubility is directly proportional to temperature. Anhydrous salt when crystallized below 62 degree centigrade crystallizes to borax decahydrate and forms borax pentahydrate otherwise. 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.