Refractory Technology Thermal conductivity of refractory bricks Is independent of its porosity and is maximum for insulating bricks Increases with decrease in porosity Decreases with decreases in porosity Increases with the amount of air entrapped in pores Is independent of its porosity and is maximum for insulating bricks Increases with decrease in porosity Decreases with decreases in porosity Increases with the amount of air entrapped in pores ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology SiO₂ percentage in firebrick is about 55-60 >94 80-85 35-40 55-60 >94 80-85 35-40 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An ideal refractory should have high None of these Fusion point Spalling rate Shrinkage ability None of these Fusion point Spalling rate Shrinkage ability ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is not a single oxiderefractory. Silicon carbide Zirconia Magnesia None of these Silicon carbide Zirconia Magnesia None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is MgCO₃ Crystalline form of MgO Amorphous magnesite ZrSO₄ MgCO₃ Crystalline form of MgO Amorphous magnesite ZrSO₄ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High density refractory bricks have lower Fusion point Slag penetration resistance Spalling resistance Thermal conductivity Fusion point Slag penetration resistance Spalling resistance Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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