Question

Anita bought silver jewellery along with her friend Rita. Anita advised Rita to make sure that the jewellery was kept in a sealed box and not exposed to air, but Rita forgot and left it open. After some months when Rita decided to wear it, she found the jewellery was all *****. Rita was very upset.

(a) Why did the jewellery become ***** when exposed to air?

(b) What is this process called?

Answer 1

(a) Silver becomes ***** when exposed to air to form a coating of silver sulphide.

(b) The process called is as corrosion.

(c) Awareness, intelligence, Sharing, Co-operative.