CGPSC MAINS 2018 Paper-4

Points to Remember: Definition and properties of thermoplastics. Structure of polythene (polyethylene) polymers. Different types of polythene and their properties. Diverse applications of polythene polymers. Introduction: Thermoplastics are a class of polymers that can be repeatedly softened by heating and solidified by cooling without undergoing any chemical change. This allows them to be molded and … Read more

Points to Remember: Definition of alloy and amalgam. Distinction between alloy and amalgam. Two examples each of alloys and amalgams. Introduction: Alloys and amalgams are both mixtures of metals, but they differ significantly in their composition and properties. An alloy is a metallic substance composed of two or more elements, at least one of which … Read more