MCQOPTIONS
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MCQOPTIONS
| 1. |
_ Zircon refractories have$? |
| A. | Low co-efficient of expansion |
| B. | High RUL (1600°C) and refractoriness (> 2000°C) |
| C. | High spalling resistance |
| D. | All of the above |
| Answer» E. | |