Which one eco-friendly refrigerant out of the following is used in many domestical and a air- conditioners now-a-days?

Which one eco-friendly refrigerant out of the following is used in man

1.	Which one eco-friendly refrigerant out of the following is used in many domestical and a air- conditioners now-a-days?
A.	\[R-22\]
B.	\[R-113\]
C.	\[R-123\]
D.	\[R-134\]
Answer» E.

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Which one eco-friendly refrigerant out of the following is used in many domestical and a air- conditioners now-a-days?

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