define (a) galvanisation (b) crystallisation
Answers
Answer:
Galvanization (or galvanisation) is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting.
Crystallization is the (natural or artificial) process of formation of solid crystals precipitating from a solution, melt or more rarely deposited directly from a gas.
Answer: (a) Galvanisation is the process of coating of steel or iron with zinc. Galvanisation protects the underlying metal, but eventuall it will rust.
(b) Crystallisation is the process in which chemical is converted into a solid crystalline state. The crystallisation is widely used in industry because it not only provides separation step but also purification step. Almost all the chemical processes utilize at least 1 crystallisation step.