Question

Q 3 Debine :-
(1) Galvanisation
(3) Crystalli
sation
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Answer 1

Answer:

to cover iron or steel in a whitish metal (zinc) to protect it from being damaged by water (rusting)

Answer 2

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$\large\mathbb\colorbox{black}{\color{cyan}{Galvanisation}}$ = The most common hot dipping process for industrial applications is galvanizing, which refers to the coating of zinc over iron or steels for rust proofing. It is an extremely versatile and easy means of providing corrosion protection for construction materials exposed to atmospheric conditions.

$\large\mathbb\colorbox{black}{\color{pink}{Crystallisation}}$ = Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.