This video lecture from Liquids and Solids (F.Sc. First Year Chemistry) covers Introduction to solids, their types (crystalline and amorphous) and detailed step by step explanation of the properties of the crystalline solids like Isomorphism, polymorphism, cleavage, Anisotropy, Symmetry, Allotropy, Transition temperature and geometry etc. 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.