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  9. Q99

OPSC OCS 2019 · Question 99 of 99

Acid rain is caused by an increase in the atmospheric concentration of:

Science & Tech

  1. AOzone and dust
  2. BSO AND NOCorrect
  3. CCO
  4. DCFC

Answer: B. SO AND NO

Explanation

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic…

Source: OPSC OCS Prelims 2019 GS Paper-I; answers per hemunda.com unofficial key

← Q98View full paper (99 questions)

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