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KPSC KAS 2017 · Question 121 of 200

Which of these are true about Hydrofluorocarbons (HFCs) ? A. HFCs, organic compounds that contain fluorine and hydrogen atoms, are commonly used in refrigerators and air-conditioners in place of chlorofluorocarbons (CFCs). B. HFCs do not harm ozone layer as much as CFCs do. C. HFCs do not cause global warming at all. Select the code for the correct answer from the options given below :

Environment

  1. AA and B onlyCorrect
  2. BB and C only
  3. CA and C only
  4. DA, B and C

Answer: A. A and B only

Explanation

HFCs replaced CFCs in refrigerants and harm the ozone layer far less, but they are potent greenhouse gases — A and B are correct.

Source: KPSC Gazetted Probationers Prelims 2017, Paper-II (General Studies, subject code 262), Series A

← Q120View full paper (200 questions)Q122 →

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