Refractory Technology Silliminite (Al2O₃.SiO₂) refractory, which is a neutral refractory, is not used in Pottery furnace Gas retorts Crucibles Glass melting furnace Pottery furnace Gas retorts Crucibles Glass melting furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Coke oven regenerator Burning zone of limestone rotary kilns Bottom hearth of reheating furnace Hearth of soaking pits Coke oven regenerator Burning zone of limestone rotary kilns Bottom hearth of reheating furnace Hearth of soaking pits ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Semi-silica bricks compared to silica bricks have Neither A nor B Better spalling resistance Both A & B Less fusion point Neither A nor B Better spalling resistance Both A & B Less fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal diffusivity of a refractory brick is high, when its __________ is high. Thermal conductivity Specific heat None of these Density Thermal conductivity Specific heat None of these Density ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 45 to 60 60 to 75 5 to 10 20 to 30 45 to 60 60 to 75 5 to 10 20 to 30 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increasing alumina content, the fusion point of high alumina refractories Increases Decreases Remains constant May increase or decrease ; depends on its alumina content Increases Decreases Remains constant May increase or decrease ; depends on its alumina content ANSWER DOWNLOAD EXAMIANS APP
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