Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? All of these SiO₂ CaO Al2O₃ All of these SiO₂ CaO Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 1000 10 100 500 1000 10 100 500 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An indication of degree of firing in silica brick is its None of these Specific gravity RUL Fusion point None of these Specific gravity RUL Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks are used in those parts of furnaces, which are Required to resist corrosive basic slag Subjected to temperature fluctuation None of these Subjected to high load Required to resist corrosive basic slag Subjected to temperature fluctuation None of these Subjected to high load ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Magnesia Alumina Thoria Zirconia Magnesia Alumina Thoria Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature All of these Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature All of these ANSWER DOWNLOAD EXAMIANS APP
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