Refractory Technology Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage? Mullite bricks Magnesite bricks Tar bonded dolomite bricks Fireclay bricks Mullite bricks Magnesite bricks Tar bonded dolomite bricks Fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a natural insulating material? None of these Asbestos Diatomaceous earth/kieselgur Vermiculite None of these Asbestos Diatomaceous earth/kieselgur Vermiculite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The maximum linear expansion of silica bricks during firing is about __________ percent. 3.5 1 0.5 2 3.5 1 0.5 2 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are Acidic in nature Having higher RUL than silica bricks Neutral in nature Made by mixing 30% chromite and 70% periclase Acidic in nature Having higher RUL than silica bricks Neutral in nature Made by mixing 30% chromite and 70% periclase ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Bottom of hot metal mixer Cupola Gas producer Roof of open hearth furnace Bottom of hot metal mixer Cupola Gas producer Roof of open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the Decreased viscosity of slag None of these Increased thermal conductivity of brick Oxidising condition in the furnace Decreased viscosity of slag None of these Increased thermal conductivity of brick Oxidising condition in the furnace ANSWER DOWNLOAD EXAMIANS APP
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