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Question: Answered & Verified by Expert
Assertion : Secondary air pollutants are formed by interaction among the primary pollutants and are more toxic.
Reason: DDT is a secondary air pollutant.
BiologyEnvironmental IssuesAIIMSAIIMS 2014
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion.
  • B If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C If assertion is true but reason is false.
  • D If both assertion and reason are false.
Solution:
2035 Upvotes Verified Answer
The correct answer is: If assertion is true but reason is false.
Secondary air pollutants are produced photo-chemically from primary pollutants. Smog, photochemical smog, ozone and PAN all are secondary air pollutants. DDT is a primary soil pollutant.

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