Ozone layer prevents the following radiation from entering the atmosphere:

(A) Infra-red
(B) Ultraviolet
(C) X-rays
(D) Gamma rays

Answer: (B) Ultraviolet

Q. “World Ozone Day” is celebrated on:
(A) September, 16
(B) October, 16
(C) November, 16
(D) December, 16

Answer: (A) September, 16

Q. Ozone is an inorganic molecule with the chemical formula:
(A) O₂
(B) O₃
(C) O₄
(D) O₅

Answer: (B) O₃