Refractory Technology With increasing alumina content, the fusion point of high alumina refractories Increases Remains constant Decreases May increase or decrease ; depends on its alumina content Increases Remains constant Decreases May increase or decrease ; depends on its alumina content ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Gas producer Bottom of hot metal mixer Cupola Roof of open hearth furnace Gas producer Bottom of hot metal mixer Cupola Roof of open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are Fired at a temperature of 600°C only Basic refractory Acidic refractory Neutral refractory Fired at a temperature of 600°C only Basic refractory Acidic refractory Neutral refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology SiO₂ percentage in firebrick is about 35-40 55-60 >94 80-85 35-40 55-60 >94 80-85 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With decrease in porosity, the __________ of the refractories decreases. None of these Thermal conductivity Strength Spalling resistance None of these Thermal conductivity Strength Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Very high cost Low co-efficient of thermal expansion Poor thermal spalling resistance Tendency to expand unduly high during firing Very high cost Low co-efficient of thermal expansion Poor thermal spalling resistance Tendency to expand unduly high during firing ANSWER DOWNLOAD EXAMIANS APP
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