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 Thermal conductivity of refractory bricks Decreases with decreases in porosity Increases with the amount of air entrapped in pores Is independent of its porosity and is maximum for insulating bricks Increases with decrease in porosity Decreases with decreases in porosity Increases with the amount of air entrapped in pores Is independent of its porosity and is maximum for insulating bricks Increases with decrease in porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of fireclay refractories is __________ percent. 25-35 44129 43961 35-50 25-35 44129 43961 35-50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Mullite is chemically represented by 2Al2O₃ . 3SiO₂ Al2O₃ . SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . 2SiO₂ 2Al2O₃ . 3SiO₂ Al2O₃ . SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . 2SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 50-100 500-1000 200-400 100-150 50-100 500-1000 200-400 100-150 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Increases Remains same Decreases May increase or decrease Increases Remains same Decreases May increase or decrease ANSWER DOWNLOAD EXAMIANS APP
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