Refractory Technology Which one contains maximum percentage of Al2O₃ ? Magnesite Firebrick Sillimanite Aluminous firebrick Magnesite Firebrick Sillimanite Aluminous firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome refractories Have very low thermal co-efficient of expansion Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have very low thermal co-efficient of expansion Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks are used in those parts of furnaces, which are Subjected to high load None of these Subjected to temperature fluctuation Required to resist corrosive basic slag Subjected to high load None of these Subjected to temperature fluctuation Required to resist corrosive basic slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? All of these Al2O₃ SiO₂ CaO All of these Al2O₃ SiO₂ CaO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Hearth of soaking pits Bottom hearth of reheating furnace Burning zone of limestone rotary kilns Coke oven regenerator Hearth of soaking pits Bottom hearth of reheating furnace Burning zone of limestone rotary kilns Coke oven regenerator ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of a refractory does not depend upon its Texture Shape Composition Firing temperature Texture Shape Composition Firing temperature ANSWER DOWNLOAD EXAMIANS APP
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