Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? CaO SiO₂ All of these Al2O₃ CaO SiO₂ All of these Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Zircon Alumina Fireclay Graphite Zircon Alumina Fireclay Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of Insulating bricks Crucibles used for melting of high purity metals Muffles for muffle furnaces Segar cones Insulating bricks Crucibles used for melting of high purity metals Muffles for muffle furnaces Segar cones ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent. 80 70 55 90 80 70 55 90 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks having lower porosity have Low heat capacity Greater strength High insulating properties Low thermal conductivity Low heat capacity Greater strength High insulating properties Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractories are used in the Dome of blast furnace stoves Electric arc furnace roof All of these Glass melting furnaces Dome of blast furnace stoves Electric arc furnace roof All of these Glass melting furnaces ANSWER DOWNLOAD EXAMIANS APP
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