Question

Q.21. Define corrosion. Name a metal which corrodes and one metal which does not
Write any three methods of prevention of corrosion. 5 Marks​

Answer 1

Explanation:

Corrosion is a natural process that converts a refined metal into a more chemically-stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually a metal) by chemical and/or electrochemical reaction with their environment.

Answer 2

Answer:

a

Explanation:

1. a process in which a metal is oxidised slowly due to attack of atmospheric gases such as oxygen , carbon dioxide , hydrogen sulphide , water vapour etc . so as the convert the metal in to oxide , sulphide , carbonate etc. is known as corrosion