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 (a), (b) & (c)
Answer» E.

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