Refractory Technology The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent. Corundum Silica Fireclay Magnesite Corundum Silica Fireclay Magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following is not an acidic refractory? Magnesia bricks Bauxite bricks Fireclay bricks Silica bricks Magnesia bricks Bauxite bricks Fireclay bricks Silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Reduced by the addition of acid oxides Not affected by the addition of acid oxides Increased by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Not affected by the addition of acid oxides Increased by the addition of acid oxides Always less than 1000°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon bricks are not used in the lining of the Electric furnaces Highly chemical resistant equipments Combustion chamber of blast furnace stoves Blast furnace hearth Electric furnaces Highly chemical resistant equipments Combustion chamber of blast furnace stoves Blast furnace hearth ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of an acidic refractory material is Not affected by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides Increased by the addition of basic oxides Not affected by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides Increased by the addition of basic oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Warming up Neither A nor B Cooling down Both A & B Warming up Neither A nor B Cooling down Both A & B ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS