Refractory Technology High porosity refractory bricks have Poor heat conductivity & low strength Better thermal spalling resistance All of these Poor resistance to the peneration of molten slag, metal & flue gases Poor heat conductivity & low strength Better thermal spalling resistance All of these Poor resistance to the peneration of molten slag, metal & flue gases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An ideal refractory should have high Fusion point Spalling rate None of these Shrinkage ability Fusion point Spalling rate None of these Shrinkage ability ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks should not be used in oxidising atmosphere. Carbon Tar dolomite Fireclay Silica Carbon Tar dolomite Fireclay Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With decrease in porosity, the __________ of the refractories decreases. Spalling resistance Thermal conductivity Strength None of these Spalling resistance Thermal conductivity Strength None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material? Aluminium phosphate Plaster of paris Water Lime Aluminium phosphate Plaster of paris Water Lime ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively. 60 and 40 50 and 50 80 and 20 20 and 80 60 and 40 50 and 50 80 and 20 20 and 80 ANSWER DOWNLOAD EXAMIANS APP
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