Which colour in photochemical smog is due to the presence of?
Which colour in photochemical smog is due to the presence of?
فوٹو کیمیکل اسموگ میں کون سا رنگ موجود ہے اس کی موجودگی کی وجہ سے؟
Explanation
NO₂ is a reddish-brown gas that gives photochemical smog its characteristic brownish color.
It is formed by the reaction of NO with oxygen in sunlight.
It is a major pollutant in urban smog.