Refractory Technology What is Thoria? All of these Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high resistance to basic slags All of these Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high resistance to basic slags ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Cristobalite Tridymite All of these Quartz Cristobalite Tridymite All of these Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome bricks are used in the All of these Roof lining of basic open hearth & other basic furnaces Soaking pits Reheating furnaces All of these Roof lining of basic open hearth & other basic furnaces Soaking pits Reheating furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High thermal conductivity of a refractory material is not important, when it is to be used in the Recuperators Coke oven regenarators Blast furnace Muffle furnace Recuperators Coke oven regenarators Blast furnace Muffle furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 5-7 2-3 14-20 7-12 5-7 2-3 14-20 7-12 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Coke oven regenerator Burning zone of limestone rotary kilns Hearth of soaking pits Bottom hearth of reheating furnace Coke oven regenerator Burning zone of limestone rotary kilns Hearth of soaking pits Bottom hearth of reheating furnace ANSWER DOWNLOAD EXAMIANS APP
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