Physics · Material Science
निम्नलिखित में से कौन सा कच्चा लोहा (कास्ट आयरन) सबसे कठोर होता है?
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- 1धूसर कच्चा लोहा (ग्रे कास्ट आयरन)
- 2आघातवर्धनीय कच्चा लोहा (मैलेबल कास्ट आयरन)
- 3तन्य कच्चा लोहा (डक्टाइल कास्ट आयरन)
- 4सफेद कच्चा लोहा (व्हाइट कास्ट आयरन)✓
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सफेद कच्चा लोहा (व्हाइट कास्ट आयरन)
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