Refractory Technology Magnesite bricks have poor resistance to attack by __________ slag. Acid Lime Basic None of these Acid Lime Basic None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its High crushing strength High thermal conductivity Non-wetting characteristic None of these High crushing strength High thermal conductivity Non-wetting characteristic None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? Al2O₃ All of these SiO₂ CaO Al2O₃ All of these SiO₂ CaO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of an acidic refractory material is Not affected by the addition of basic oxides Reduced by the addition of basic oxides Not affected by the addition of basic oxides Increased by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides Not affected by the addition of basic oxides Increased by the addition of basic oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Spinel', a refractory mineral is chemically represented as MgAl2O₃.2H₂O MgSO₄ MgAl2O₄ MgAl2O₃ MgAl2O₃.2H₂O MgSO₄ MgAl2O₄ MgAl2O₃ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. Resistance to slag penetration RUL Permanent linear change Resistance to CO attack Resistance to slag penetration RUL Permanent linear change Resistance to CO attack ANSWER DOWNLOAD EXAMIANS APP
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