A. Nitrogen
B. Carbon dioxide
C. Methane D. Tetrafluoroethane
Updated by: NoumaN
Tetrafluoroethane: It is one of the commonly used refrigerant gases which you can find in almost all the present time refrigerators. This gas is condensed effectively so that it can cool down the surroundings of the machine without causing the problem of ozone depletion.
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Wrong answer. HFC-134a (1,1,1,2-Tetrafluoroethane or Freon gases are used in refrigerators