Photochemical smog is formed from automobile exhaust – McqOptions

MCQOPTIONS

1.	Photochemical smog is formed from automobile exhaust
A.	By reaction of hydrocarbon & nitric oxide in presence of sunlight
B.	Appears only on sunny days
C.	Is harmful for crops and trees also besides causing eye irritation & asthma
D.	All of the above
Answer» E.

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