A. Strength
B. Abrasion resistance
C. Both A. & B.
D. Neither A. nor B.
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Related Mcqs:
- Semi-silica bricks compared to silica bricks have_______________?
- A. Less fusion point B. Better spalling resistance C. Both A. and B. D. Neither A. not B....
- Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?
- A. Aluminium phosphate B. Water C. Lime D. Plaster of Paris...
- Porosity of silica bricks varies from ______________ percent?
- A. 5 to 10 B. 20 to 30 C. 45 to 60 D. 60 to 75...
- Silica bricks have low spalling resistance below 600°C, due to its________________?
- A. Very high thermal conductivity B. High co-efficient of expansion upto this temperature C. High thermal diffusivity D. Low refractoriness...
- The maximum linear expansion of silica bricks during firing is about ______________ percent?
- A. 0.5 B. 1 C. 2 D. 3.5...
- Silica bricks are never used for lining the____________________?
- A. Beehive coke ovens B. By-product coke ovens C. Dome of blast furnace stoves D. Roof of open hearth furnace...
- Which of the following impurities reduces the refractoriness of magnesite bricks ?
- A. Al2O3 B. CaO C. SiO2 D. All A., B. & C....
- Si percentage in silica refractories used in the walls of coke oven is about______________________?
- A. 45 B. 60 C. 80 D. 95...
- Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory_________________?
- A. Mortars B. Cements C. Castables D. None of these...
- Refractoriness of a typical silica brick corresponds to Segar cone number, ’32’, which is equivalent to a temperature of _____________ °C?
- A. 1380 B. 1520 C. 1710 D. 1915...
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