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| Q. |
Why is sand bed prepared for melting of metal in Cupola furnace? |
| A. | it provides a refractory bottom |
| B. | it soaks the moisture from the metal |
| C. | it conducts the heat faster and uniformly |
| D. | none of the mentioned |
| Answer» A. it provides a refractory bottom | |
| Explanation: a sand bed needs to be prepared because it provides a necessary refractory bottom for molten metal and coke. | |
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