Question:
An environment friendly refrigerant used in a household refrigerator is
An environment friendly refrigerant used in a household refrigerator is
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Refrigerants with chlorine harm the ozone layer. R-134a has no chlorine, so it is the safer choice.
Updated On: Oct 20, 2026
- R-134a
- R-22
- R-11
- R-12
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The Correct Option is A
Solution and Explanation
Step 1: Understand environment friendly:
A refrigerant is harmful to the ozone layer if it has chlorine in it. Such gases are CFCs and HCFCs.
R-134a has no chlorine, so its ozone depletion potential is zero.
Step 2: Check option (A):
R-134a is a hydrofluorocarbon (HFC), chemically CH2FCF3. It is widely used in household refrigerators and does not harm the ozone layer.
Step 3: Check the other options:
R-22 is an HCFC. It has chlorine and damages the ozone layer, so it is being phased out.
R-11 is a CFC. It harms the ozone layer badly.
R-12 is a CFC. It was used earlier in refrigerators but is now banned because it harms the ozone layer.
Final Answer:
R-134a is the ozone-safe refrigerant used in household refrigerators. This is option (A).
A refrigerant is harmful to the ozone layer if it has chlorine in it. Such gases are CFCs and HCFCs.
R-134a has no chlorine, so its ozone depletion potential is zero.
Step 2: Check option (A):
R-134a is a hydrofluorocarbon (HFC), chemically CH2FCF3. It is widely used in household refrigerators and does not harm the ozone layer.
Step 3: Check the other options:
R-22 is an HCFC. It has chlorine and damages the ozone layer, so it is being phased out.
R-11 is a CFC. It harms the ozone layer badly.
R-12 is a CFC. It was used earlier in refrigerators but is now banned because it harms the ozone layer.
Final Answer:
R-134a is the ozone-safe refrigerant used in household refrigerators. This is option (A).
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