Refractory Technology Electrical resistor bars are made of Alumina Graphite Zirconia Silicon carbide Alumina Graphite Zirconia Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Neutral Oxidising Neither A nor B Either A or B Neutral Oxidising Neither A nor B Either A or B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Better thermal spalling resistance Poor heat conductivity & low strength Poor resistance to the peneration of molten slag, metal & flue gases All of these Better thermal spalling resistance Poor heat conductivity & low strength Poor resistance to the peneration of molten slag, metal & flue gases All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have All of these High RUL (1600°C) and refractoriness (> 2000°C) Low co-efficient of expansion High spalling resistance All of these High RUL (1600°C) and refractoriness (> 2000°C) Low co-efficient of expansion High spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Aluminous firebrick Firebrick Semi-silica Sillimanite Aluminous firebrick Firebrick Semi-silica Sillimanite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase refractory contains mainly MgO CaO SiO₂ Al2O₃ MgO CaO SiO₂ Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
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