Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Increases Remains same May increase or decrease Decreases Increases Remains same May increase or decrease Decreases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The maximum linear expansion of silica bricks during firing is about __________ percent. 0.5 1 2 3.5 0.5 1 2 3.5 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Zirconium sulphate Crystalline magnesia Silicon carbide Silicon nitride Zirconium sulphate Crystalline magnesia Silicon carbide Silicon nitride ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are All of these Having high strength & resistance to high temperature Composite material containing both ceramic & metallic constituents Used in space vehicles, missiles & nuclear energy plants All of these Having high strength & resistance to high temperature Composite material containing both ceramic & metallic constituents Used in space vehicles, missiles & nuclear energy plants ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent. Magnesite Fireclay Silica Corundum Magnesite Fireclay Silica Corundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following is not a high alumina refractory material? Diaspore Kyanite Periclase Sillimanite Diaspore Kyanite Periclase Sillimanite ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS