Refractory Technology Spray test determines the __________ of refractories. Resistance to CO attack Resistance to slag penetration RUL Permanent linear change Resistance to CO attack Resistance to slag penetration RUL Permanent linear change ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Thermal spalling CO attack Slag attack Fusion under load Thermal spalling CO attack Slag attack Fusion under load ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of an acidic refractory material is 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 Not affected by the addition of basic oxides Reduced by the addition of basic oxides Not affected by the addition of basic oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Spinel', a refractory mineral is chemically represented as MgSO₄ MgAl2O₃ MgAl2O₃.2H₂O MgAl2O₄ MgSO₄ MgAl2O₃ MgAl2O₃.2H₂O MgAl2O₄ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a natural insulating material? Asbestos None of these Vermiculite Diatomaceous earth/kieselgur Asbestos None of these Vermiculite Diatomaceous earth/kieselgur ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Dolomite Silica Fireclay Very low alumina Dolomite Silica Fireclay Very low alumina ANSWER DOWNLOAD EXAMIANS APP
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