Question

why do we polish metals to bring back their Shine

Answer 1

Metals are polished to bring back the shine because metals tend to rust if they are kept long in the atmosphere unattended.

In order to avoid rusting, polishing is the best method.

There are a number of polishes in the market that can ensure that rusting does not take place.

In addition to this, there are certain methods in which the polish needs to be applied on the body.

Answer 2

Explanation:

the lustre of some metals is lost when exposed to the atmosphere. This is because the metals reacts with air and moisture present in atmosphere to form a thin coating of an oxide layer on its surface. The metals are then said to be tarnished. Polishing them, rubbing them with a sand paper removes the oxide layer and metals regain its lustre .