Refractory Technology Magnesite refractories are used for the construction of those furnaces, which are Used for raising & maintaining high temperature Not subjected to fluctuation in temperature Not required to resist the corrosive action of basic slag Both (b) and © Used for raising & maintaining high temperature Not subjected to fluctuation in temperature Not required to resist the corrosive action of basic slag Both (b) and © ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? None of these Tridymite Quartz Cristobalite None of these Tridymite Quartz Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 2-3 7-12 14-20 5-7 2-3 7-12 14-20 5-7 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves? High resistance to spalling High strength and density High refractoriness All of these High resistance to spalling High strength and density High refractoriness All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Increases Decreases linearly Remains unchanged Decreases Increases Decreases linearly Remains unchanged Decreases 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 Cost Fusion point Thermal conductivity Electrical conductivity Cost Fusion point Thermal conductivity Electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
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