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  9. Q102

WBCS 2022 · Question 102 of 191

Which among the following is present in refrigerator?

Science - Chemistry

  1. ACarbon dioxide
  2. BMethane
  3. CHelium
  4. DChlorofluorocarbonCorrect

Answer: D. Chlorofluorocarbon

Explanation

Official WBPSC key (Series A): (D) Chlorofluorocarbon. Older refrigerators used chlorofluorocarbons (CFCs) as refrigerants.

Source: WBCS (Exe) etc. (Prelim) 2022, Series A

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