Refractory Technology With increasing alumina content, the fusion point of high alumina refractories May increase or decrease ; depends on its alumina content Increases Remains constant Decreases May increase or decrease ; depends on its alumina content Increases Remains constant Decreases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks have poor resistance to attack by __________ slag. Lime Acid Basic None of these Lime Acid Basic None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Increased by the addition of acid oxides Reduced by the addition of acid oxides Always less than 1000°C Not affected by the addition of acid oxides Increased by the addition of acid oxides Reduced by the addition of acid oxides Always less than 1000°C Not affected by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Silica Silicon carbide Chrome or magnesite Lowduty fireclay Silica Silicon carbide Chrome or magnesite Lowduty fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Fireclay Zircon Graphite Alumina Fireclay Zircon Graphite Alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Tar dolomite bricks are used in the Electric furnaces Basic open hearth furnace All of these Basic Bessemer converter Electric furnaces Basic open hearth furnace All of these Basic Bessemer converter ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS