Question

Give scientific reasons. (Any 2) Grills and
doors are always painted before they used.​

Answer 1

Answer:

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Explanation:

Paint does not allow air or moisture to come in contact with iron surface. Therefore, to prevent rusting of iron, grills of doors and windows are always painted before they are used.

Answer 2

Answer:

1) For it's smooth function

2) It's prevents from corosion

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