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Sarkari MCQs Government Exam Question Bank
Question no. 15855

Which of the following is not a primary pollutant__________________?

Select your answer for: Which of the following is not a primary pollutant__________________?
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Answer: D. H2SO4

Explanation

Sulfuric acid forms in the atmosphere through the oxidation of sulfur dioxide gases. Secondary pollutants are created by chemical reactions occurring in the ambient air. Direct industrial emissions rarely release sulfuric acid as a primary gas pollutant. Primary pollutants are emitted directly from identifiable sources like factory smokestacks. Atmospheric moisture and catalysts convert sulfur dioxide into secondary sulfuric acid. Acid aerosols pose significant environmental and public health concerns worldwide.

Air quality monitoring networks track sulfuric acid aerosols to assess regional pollution. Industrial scrubbers are installed on smokestacks to prevent sulfur dioxide emissions. Environmental chemistry studies atmospheric reactions to mitigate acid rain damage. Sulfur trioxide can be a direct emission or an intermediate in sulfuric acid formation. Carbon monoxide is emitted directly from combustion engines as a primary pollutant. Nitrogen monoxide is released directly from vehicle exhausts into the lower atmosphere.

Subject
Chemistry
Category
Chemistry
Topic
—
Difficulty
medium

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