Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Corundum Carborundum Thoria Beryllia Corundum Carborundum Thoria Beryllia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 1000 500 100 10 1000 500 100 10 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are never used for lining the Dome of blast furnace stoves By-product coke ovens Roof of open hearth furnace Beehive coke ovens Dome of blast furnace stoves By-product coke ovens Roof of open hearth furnace Beehive coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where Presence of iron or silica is harmful Very high temperatures are involved Highly reducing conditions are involved All of these Presence of iron or silica is harmful Very high temperatures are involved Highly reducing conditions are involved All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following does not occur during firing/burning of refractories? Vitrification Removal of water of hydration Decrease in crushing strength Development of stable mineral form Vitrification Removal of water of hydration Decrease in crushing strength Development of stable mineral form ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Neutral in nature Acidic in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Neutral in nature Acidic in nature ANSWER DOWNLOAD EXAMIANS APP
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