Multiple choice general knowledge science & technology

A refigerant used in the domestic refrigerator is

  1. Sulphur dioxide

  2. air

  3. methane

  4. freon
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Freon (chlorofluorocarbon or CFC) compounds were the standard refrigerants in domestic refrigerators for decades. While sulphur dioxide was used historically, modern domestic refrigerators primarily use various types of freon (R-12, R-134a, etc.). Air and methane are not practical refrigerants for household cooling applications.

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