Question

Grills of doors and windows are always
painted before they
are used.​ give reason

Answer 1

(1) Grills of doors and windows are made from iron. Iron has a tendency to undergo corrosion. (2) Paint does not allow air or moisture to come in contact with iron surface.

(3)Therefore, to prevent rusting of iron, grills of doors and windows are always painted before they are used.

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