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| Q. |
Refractory metals are |
| A. | Those which can be cast in the form of bricks |
| B. | Those which reflect heat |
| C. | Those which have melting point above 1950?C |
| D. | Those which absorb heat |
| E. | Those do not malt in a normal furnace |
| Answer» C. Those which have melting point above 1950?C | |
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