Chemistry - Environmental Chemistry Question with Solution | TestHub

ChemistryEnvironmental ChemistryAir PollutionMedium2 minQB
ChemistryMediummultiple choice

A substance which causes pollution is known as pollutant, then which of the following is/are TRUE about pollutant and its effects.

Options:(select one or more)

Answer:
A, C, D
Solution:

Statement (A) is true because SO₂ and NO₂ oxidize in the atmosphere and react with water to form acid rain as H₂SO₄ and HNO₃.

 

Statement (B) is false because CF₂Cl₂ (Freon) is an ozone-depleting substance, not a component of photochemical smog (which contains O₃, PAN, and NOₓ).

 

Statement (C) is true because nutrient enrichment (eutrophication) triggers heavy algal growth that consumes dissolved oxygen, suffocating aquatic animals.

 

Statement (D) is true because CO₂, CH₄, O₃, and water vapor efficiently trap infrared radiation, acting as greenhouse gases that drive global warming.

Stream:JEESubject:ChemistryTopic:Environmental ChemistrySubtopic:Air Pollution
2mℹ️ Source: QB

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