Physics · Engineering Materials and Tools
वर्कशॉप हैंड फ़ाइल (रेती) उपकरण बनाने के लिए मुख्य रूप से किस सामग्री का उपयोग किया जाता है?
- 1पिटवा लोहा (Wrought iron)
- 2मृदु इस्पात (Mild steel)
- 3ढलवां लोहा (Cast iron)
- 4उच्च कार्बन इस्पात (High carbon steel)✓
सही उत्तर देखें
उच्च कार्बन इस्पात (High carbon steel)
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