Peroxyacetyl nitrate (PAN) is a by-product of ______?

پیرو آکسیٹیل نائٹریٹ (پین) ______ کا ایک پروڈکٹ ہے؟

London smog

Photochemical smog

Sulphurous smog

None of these

Explanation

Peroxyacetyl nitrate (PAN) is a toxic pollutant formed in photochemical smog due to reactions involving hydrocarbons and nitrogen oxides in sunlight.

It is a strong eye and respiratory irritant.

It is commonly found in urban areas with heavy vehicle emissions.