Refractory Technology Magnesite refractories are used for the construction of those furnaces, which are Used for raising & maintaining high temperature Both (b) and © Not required to resist the corrosive action of basic slag Not subjected to fluctuation in temperature Used for raising & maintaining high temperature Both (b) and © Not required to resist the corrosive action of basic slag Not subjected to fluctuation in temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Magnesia Alumina Zirconia Thoria Magnesia Alumina Zirconia Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ nozzles are used in continuous casting of steel, Carborundum Thoria Beryllia Zircon Carborundum Thoria Beryllia Zircon ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the Oxidising condition in the furnace Increased thermal conductivity of brick Decreased viscosity of slag None of these Oxidising condition in the furnace Increased thermal conductivity of brick Decreased viscosity of slag None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the density of silica refractories, its Spalling resistance reduces Resistance to slag attack increases Neither A nor B Both A & B Spalling resistance reduces Resistance to slag attack increases Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have Low co-efficient of expansion All of these High spalling resistance High RUL (1600°C) and refractoriness (> 2000°C) Low co-efficient of expansion All of these High spalling resistance High RUL (1600°C) and refractoriness (> 2000°C) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS