Which of the following statement is true about photochemical smog?

1.	Which of the following statement is true about photochemical smog?
Answer» it is reducing in nature it is formed in winter It is a sulphurous smog. Components of the smog, `NO` and `O_(3)`. Irritate the NOSE and throat and their high concentration couses headache, chest pain, dryness of the throat, cough and DIFFICULTY in breathing. Solution :Photochemical smog occurs in warm, dry and sunny climate. It has high concentration of `NO,NO_(2)` and `O_(3)`. Their low concentration causes irritation in nose and throat and their high concentration causes headached, chest pain, cough and difficulty in BREATING.

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