This is the same as applied chemistry. it is a way or method by which industrial chemist uses the knowledge of chemistry to produce useful and industrial chemical compound of higher demand by people in the society e.g dyes. this same knowledge is applicable in metallurgical industries where metals ar being extracted 4rm their various ores by chemical reduction process, it is also applicable in pharmaceutical industries where drugs ar produced, in cement industries i.e the industrial mixin of limestones i.e Cas04 wit other chemical substances to form cement, in soap making industries i.e SAPONIFICATION ; this is a process by which melted fats combines wit excess caustic soda i.e NaOH to form soap.