Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where Presence of iron or silica is harmful Highly reducing conditions are involved Very high temperatures are involved All of these Presence of iron or silica is harmful Highly reducing conditions are involved Very high temperatures are involved All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Remains same Increases Decreases May increase or decrease Remains same Increases Decreases May increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Graphite Fireclay Carborundum Chromite Graphite Fireclay Carborundum Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dolomite bricks have good resistance to attack by Iron oxide Molten steel None of these Lime slag Iron oxide Molten steel None of these Lime slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks are used in those parts of furnaces, which are Subjected to high load Required to resist corrosive basic slag None of these Subjected to temperature fluctuation Subjected to high load Required to resist corrosive basic slag None of these Subjected to temperature fluctuation ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Open hearth furnace Electric furnace walls Burning zone of cement kilns Steel melting furnace Open hearth furnace Electric furnace walls Burning zone of cement kilns Steel melting furnace ANSWER DOWNLOAD EXAMIANS APP
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