Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where All of these Presence of iron or silica is harmful Very high temperatures are involved Highly reducing conditions are involved All of these Presence of iron or silica is harmful Very high temperatures are involved Highly reducing conditions are involved ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Quartz All of these Tridymite Cristobalite Quartz All of these Tridymite Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Burning zone of cement kilns Open hearth furnace Steel melting furnace Electric furnace walls Burning zone of cement kilns Open hearth furnace Steel melting furnace Electric furnace walls ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Sillimanite Silica bricks Firebricks Silicon carbide bricks Sillimanite Silica bricks Firebricks Silicon carbide bricks 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
Refractory Technology Which is not an alumino-silicate refractory? Mullite bricks High alumina bricks Tar dolomite bricks Fireclay bricks Mullite bricks High alumina bricks Tar dolomite bricks Fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
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