Refractory Technology Spalling tendency of refractories is reduced by increasing its Thermal conductivity Strength Porosity Specific gravity Thermal conductivity Strength Porosity Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractory blocks Are used in the hearth of blast furnace Are wetted by molten iron All of these Are acidic in nature Are used in the hearth of blast furnace Are wetted by molten iron All of these Are acidic in nature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent. 80 90 55 70 80 90 55 70 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours. 700 2000 1600 1000 700 2000 1600 1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Sillimanite Semi-silica Aluminous firebrick Firebrick Sillimanite Semi-silica Aluminous firebrick Firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 2400-2600 800-1000 1600-1800 1000-1200 2400-2600 800-1000 1600-1800 1000-1200 ANSWER DOWNLOAD EXAMIANS APP
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