Rahul visited the house of the friend Shayam and found that all the water laps were rusted. On equiry, he came to know that these were iron taps. Rahul advised his friend to use either chrome plated or nickel plated taps. Shyam accepted his advice. On the basis of above passage give the answer of the following questions:
(i) Why did iron tap get rusted?
(ii) What was the purpose of chrom plating or nickel plating?
(iii) What is the value associated with this?

Explanation

(i) Iron is prone to rust. It get rusted when kept in opne.
(ii) The purpose of depositng a layer of chromium or nickel or the surface of iron is to check rusting.
(iii) General awareness
(b) Friendship
(c ) Knowledge of chemistry put to use.