Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. High density Low porosity Non-wetting characteristics High thermal conductivity High density Low porosity Non-wetting characteristics High thermal conductivity 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 is induced in insulating refractories by adding Ammonium chloride/sulphate Calcium phosphate All of these Powdered naphthalene Ammonium chloride/sulphate Calcium phosphate All of these Powdered naphthalene ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ nozzles are used in continuous casting of steel, Beryllia Carborundum Thoria Zircon Beryllia Carborundum Thoria Zircon ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is ZrSO₄ Crystalline form of MgO Amorphous magnesite MgCO₃ ZrSO₄ Crystalline form of MgO Amorphous magnesite MgCO₃ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where Highly reducing conditions are involved Very high temperatures are involved All of these Presence of iron or silica is harmful Highly reducing conditions are involved Very high temperatures are involved All of these Presence of iron or silica is harmful ANSWER DOWNLOAD EXAMIANS APP
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