Science · Chemistry
निम्नांकित में से कौन सी गैस वेल्डिंग में उपयोग की जाती है?
- 1नाइट्रोजन
- 2हाइड्रोजन
- 3कार्बन डाईऑक्साइड
- 4एसीटिलीन✓
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एसीटिलीन
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