Physics · Chemical Properties and Processes
लोहे को जंग लगने से बचाने के लिए निम्नलिखित में से किस विधि का उपयोग नहीं किया जाता है?
- 1गर्म करना✓
- 2गैल्वनाइजिंग (जस्तीकरण)
- 3पेंटिंग
- 4क्रोम प्लेटिंग
सही उत्तर देखें
गर्म करना
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