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				| 1. | What should be the range of percentage of carbon (C) in iron (Fe) to be called as cast iron? | 
| A. | 0.1-0.5 | 
| B. | 0.5-1.0 | 
| C. | 1.0-2.0 | 
| D. | 2.0-5.0 | 
| Answer» E. | |