Project ForgeThermodynamics
First Law of Thermodynamics
GATE 2014
Easy
Which one of the following is a CFC refrigerant?
- AR744
- BR290
- R502
- DR718
Explanation
R744 is CO₂, R290 is propane (a hydrocarbon), and R718 is water — none contain chlorine or fluorine in the CFC sense. R502 is an azeotropic blend of R22 and R115, and includes R115 (a CFC), making it the CFC-classified option among these four.
Source: GATE ME 2014 (Session 1 / Set-1) (2014)
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