Often visible as smog , ozone is formed in the atmosphere form" hydrocarbons and nitrogen oxides , two major pollutants emitted by automobiles react with sunlight .
A. ozone is formed in the atmosphere from
B. ozone is formed in the atmosphere when
C. ozone is formed in the atmosphere when
D. ozone is formed in the atmosphere ,and when
E. None of them
সঠিক উত্তরঃ
B.
ozone is formed in the atmosphere when
Explanation:
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