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| Q. |
What is hearth in a furnace? |
| A. | the electrodes are often called hearth |
| B. | the walls of the furnace |
| C. | the bowl shaped bottom of the furnace |
| D. | the dome shaped roof of the furnace |
| Answer» C. the bowl shaped bottom of the furnace | |
| Explanation: the hearth is that bowl shaped bottom of the furnace. it is made up of a high refractory material (bricked and granular). | |
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