Chemistry
NULL
Medium
Question
Which of the following is not primary pollutant__________________?
A
SO3
B
CO
C
NO
D
H2SO4
✓ Official correct answer
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A
SO3
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B
CO
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C
NO
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D
H2SO4
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Explanation
H2SO4 is a secondary pollutant, forming in the atmosphere from the reaction of SO2/SO3 with water, unlike SO3, CO, and NO, which are directly emitted primary pollutants.
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