Chemistry · Environmental Chemistry
आधुनिक घरेलू रेफ्रिजरेटरों में हाइड्रोफ्लोरोकार्बन (HFC) के पर्यावरण-अनुकूल विकल्प के रूप में निम्नलिखित में से किस गैस का व्यापक रूप से उपयोग किया जाता है?
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