60. Ozone layer above the surface of Earth provides a shield against A.X-rays B.Ultra-violet rays C.Gamma rays D.Infra-red rays
Option B Solution: Ozone is present in the atmosphere in small amounts, in a layer 10 to 60 kilometres above the earth (ozonosphere) and in close proximity to the ground. The ozone layer serves as protective shield against ultraviolet (UV) rays.
