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Which gas is used in refrigerators for cooling?

A
Oxygen
B
Ammonia
C
Nitrogen
D
Methane
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🇮🇳 हिंदी Hindi Version
रेफ्रिजरेटर में कूलिंग के लिए किस गैस का उपयोग किया जाता है?
A
ऑक्सीजन
B
अमोनिया
C
नाइट्रोजन
D
मीथेन
Science 490/525
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