Refractory Technology Fusion point of a basic refractory material is Increased by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Increased by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Porosity Thermal conductivity Strength Specific gravity Porosity Thermal conductivity Strength Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? Tridymite Quartz None of these Cristobalite Tridymite Quartz None of these Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 70 30 90 50 70 30 90 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Preheating All of these Cooling Burning Preheating All of these Cooling Burning ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High density refractory bricks have lower Spalling resistance Thermal conductivity Slag penetration resistance Fusion point Spalling resistance Thermal conductivity Slag penetration resistance Fusion point ANSWER DOWNLOAD EXAMIANS APP
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