Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases Decreases linearly Increases Remains unchanged Decreases Decreases linearly Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of zircon to silica refractory brick improves its Resistance to slag attack Neither A nor B Crushing strength Neither A nor B Resistance to slag attack Neither A nor B Crushing strength Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Basic bricks are not made of Fireclay Foresterite Chromite Magnesite Fireclay Foresterite Chromite Magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Silicon nitride Zirconium sulphate Silicon carbide Crystalline magnesia Silicon nitride Zirconium sulphate Silicon carbide Crystalline magnesia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog addition in fireclay during brick manufacture is done to Impart greater spalling resistance All of these Enhance the strength of fired refractories Reduce its shrinkage on heating Impart greater spalling resistance All of these Enhance the strength of fired refractories Reduce its shrinkage on heating ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With decrease in porosity, the __________ of the refractories decreases. Strength Spalling resistance None of these Thermal conductivity Strength Spalling resistance None of these Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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