Corrosion of silver is a chemical change ?

Q. Corrosion of metals is an example of a chemical change

Q.

The rusting of an iron object is called:

(a) corrosion and it is a physical as well as a chemical change

(b) dissolution and it is a physical change

(c) corrosion and it is a chemical change

(d) dissolution and it is a chemical change

Q. Question 2
Rusting of an article made up of iron is called

(a) corrosion and it is a physical as well as chemical change
(b) dissolution and it is a physical change
(c) corrosion and it is a chemical change
(d) dissolution and it is a chemical change

Q.

Which one of the following is not a chemical change?

(a) formation of curd (b) ripening of banana

(c) sublimation of naphthalene (d) corrosion of photo frame

Q. Corrosion is a chemical reaction that involves :