Differentiate between Brown air and Grey air.
(N/A)
| Brown air | Grey air |
|---|---|
| $(1)$ It is a reddish-brown haze primarily containing nitrogen oxides $(NO_x)$. | $(1)$ It is a grey-coloured haze primarily formed of $SO_2$,particulate matter,and smoke,often referred to as classical smog. |
| $(2)$ It occurs under intense solar conditions,leading to photochemical smog. | $(2)$ It occurs under less intense solar conditions,often associated with industrial pollution. |
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