• # question_answer 27)   Which of the following statements about photo chemical smog is wrong? (a) It has high concentration of oxidising agents. (b) It has low concentration of oxidising agent. (c) It can be controlled by controlling the release of$N{{O}_{2}}$, hydrocarbons, ozone, etc. (d) Plantation of some plants like pinus helps in controlling photo chemical smog.

(b) Photochemical smog has high concentration of oxidants such as${{O}_{3}}$, organic oxidants, etc.