प्रशीतक के रूप में आजकल CFC-12 का प्रयोग क्यों नहीं किया जाता है?

  1. यह अस्थिर है
  2. ग्लोबल वार्मिंग
  3. ओजोन का अवक्षय
  4. निम्न गुप्त ऊष्मा मान

Answer (Detailed Solution Below)

Option 3 : ओजोन का अवक्षय
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R -12 और R502 जैसे CFC (क्लोरोफ्लूरोकार्बन) समतापमण्डल में ओजोन का अवक्षय करते हैं। यही कारण है कि आजकल R-12 का उपयोग नहीं किया जाता है। CFC को प्रतिस्थापित करने के लिए HCFC और HC शीतलक का प्रयोग किया जाता है।
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