Question

give reason.aluminium and zinc metals do not corrode easilyeven though they are reactive metals​

Answer 1

Aluminium and zinc react with moist air to form a thin protective layer of oxide on their surfaces. This Iayer prevents further corrosion of the metals.

Answer 2

Aluminum and Zinc reacts with oxygen and their oxides are protective in nature which prevents them from further reaction.
So they don't get corroded.