Q. Which of the following statements is not false?
A) $SO_{2}$ does not affect larynx
B) $SO_{2}$ is more harmful air pollutant than $SO_{3}$
C) $NO_{2}$ is more toxic to living tissues than NO
D) $NO_{x}$ do not play any role in photochemical smog
Explanation
(c)
$SO_{2}$ affects larynx, between $SO_{2}$ and $SO_{3},\ SO_{3}$ is more harmful air pollutant and between $NO_{2}$ and $NO,\ NO_{2}$ is more toxic. Photochemical smog is caused by oxides of nitrogen
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.