Refractory Technology 10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite. Crushing strength Spalling resistance Refractoriness Resistance to slag Crushing strength Spalling resistance Refractoriness Resistance to slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The largest consumer of refractories is the __________ industry. Fertiliser Power Metallurgical Cement Fertiliser Power Metallurgical Cement ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ramming masses are used for Both A & B Repairing construction of various furnace parts Obtaining monolithic working faces Neither A nor B Both A & B Repairing construction of various furnace parts Obtaining monolithic working faces Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are used for the construction of those furnaces, which are Not subjected to fluctuation in temperature Both (b) and © Not required to resist the corrosive action of basic slag Used for raising & maintaining high temperature Not subjected to fluctuation in temperature Both (b) and © Not required to resist the corrosive action of basic slag Used for raising & maintaining high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except Electrical conductivity Thermal conductivity Cost Fusion point Electrical conductivity Thermal conductivity Cost Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. RUL Resistance to slag penetration Permanent linear change Resistance to CO attack RUL Resistance to slag penetration Permanent linear change Resistance to CO attack ANSWER DOWNLOAD EXAMIANS APP
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