Chemistry · Metals and Metallurgy
कठोर स्टील में कार्बन की प्रतिशत मात्रा कितनी होती है?
- 15.0 से 8.0%
- 23.0 से 4.5%
- 30.1 से 0.4%
- 40.5 से 1.5%✓
सही उत्तर देखें
0.5 से 1.5%
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