1. Except , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity)
2. Refractoriness under load (RUE) is the most important property for the refractory bricks
3. Spalling resistance of a refractory can not be increased by
4. With increasing alumina content, the fusion point of high alumina refractories
5. Which is not an alumino-silicate refractory?
6. Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material?
7. Fireclay refractories have
8. Which is a basic refractory?
9. Which of the following is not a neutral refractory?
10. Electrical resistor bars are made of
2. Refractoriness under load (RUE) is the most important property for the refractory bricks
3. Spalling resistance of a refractory can not be increased by
4. With increasing alumina content, the fusion point of high alumina refractories
5. Which is not an alumino-silicate refractory?
6. Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material?
7. Fireclay refractories have
8. Which is a basic refractory?
9. Which of the following is not a neutral refractory?
10. Electrical resistor bars are made of
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