MEDIUMMCQ SINGLENEET ChemistryInorganic ChemistryEnvironmental ChemistryO3, NO2 acrolein, formaldehyde and PAN
Which of the following protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2
A.I and II
B.II and IV
C.II only✓ Correct
D.I and IV
Explanation
The stratosphere consists of considerable amount of ozone (O3) which protect us from the harmful ultraviolet (UV) radiations (=255nm) coming from the sun.
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