Science · Science
रेफ़रिजरेटरों में तापमान कम करने के लिए आमतौर पर कौन सी गैस का उपयोग किया जाता है?
- 1हाइड्रोजन
- 2अमोनिया या फ्रियोन✓
- 3ऑक्सीजन
- 4नाइट्रोजन
सही उत्तर देखें
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