Refractory Technology silicon carbide refractories have very low Thermal conductivity None of these Refractoriness (< 1700°C) Resistance to thermal shock Thermal conductivity None of these Refractoriness (< 1700°C) Resistance to thermal shock ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks have poor resistance to attack by __________ slag. Lime Acid Basic None of these Lime Acid Basic None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? Al2O₃ All of these SiO₂ CaO Al2O₃ All of these SiO₂ CaO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology SiO₂ percentage in firebrick is about 55-60 >94 80-85 35-40 55-60 >94 80-85 35-40 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are Acidic in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Neutral in nature Acidic in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Neutral in nature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing of refractory brick is done to Develop stable mineral forms in them Dehydrate the dried refractory All of these Form ceramic bonds necessary for development of high crushing strength in the finished product Develop stable mineral forms in them Dehydrate the dried refractory All of these Form ceramic bonds necessary for development of high crushing strength in the finished product ANSWER DOWNLOAD EXAMIANS APP
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