Refractory Technology Spray test determines the __________ of refractories. RUL Resistance to CO attack Resistance to slag penetration Permanent linear change RUL Resistance to CO attack Resistance to slag penetration Permanent linear change ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Natural silica Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Mainly contains quartz Is not stable at high temperature All of these Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Mainly contains quartz Is not stable at high temperature All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dilatometer is used for the determination of __________ of refractories. Permanent linear change RUL Modulus of rupture Resistance to CO attack Permanent linear change RUL Modulus of rupture Resistance to CO attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks are used in those parts of furnaces, which are Subjected to temperature fluctuation Subjected to high load None of these Required to resist corrosive basic slag Subjected to temperature fluctuation Subjected to high load None of these Required to resist corrosive basic slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent. Silica Magnesite Corundum Fireclay Silica Magnesite Corundum Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Conversion of silica mineral to cristobalite is accompanied by reduction in its Volume Specific gravity Both A & B Neither A nor B Volume Specific gravity Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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