Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 500-1000 200-400 100-150 50-100 500-1000 200-400 100-150 50-100 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal conductivity of refractory bricks Is independent of its porosity and is maximum for insulating bricks Increases with the amount of air entrapped in pores Decreases with decreases in porosity Increases with decrease in porosity Is independent of its porosity and is maximum for insulating bricks Increases with the amount of air entrapped in pores Decreases with decreases in porosity Increases with decrease in porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks. Semi-silica Bakelite impregnated or fused periclase Fireclay Silica Semi-silica Bakelite impregnated or fused periclase Fireclay Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage? Tar bonded dolomite bricks Fireclay bricks Magnesite bricks Mullite bricks Tar bonded dolomite bricks Fireclay bricks Magnesite bricks Mullite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dolomite bricks have good resistance to attack by Iron oxide None of these Lime slag Molten steel Iron oxide None of these Lime slag Molten steel ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increasing alumina content, the fusion point of high alumina refractories May increase or decrease ; depends on its alumina content Increases Decreases Remains constant May increase or decrease ; depends on its alumina content Increases Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
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