Refractory Technology Resistance to slag attack of a refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature Depends on the nature of slag & refractory All of these Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature Depends on the nature of slag & refractory All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Quartz All of these Tridymite Cristobalite Quartz All of these Tridymite Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum safe working temperature for fireclay bricks is about __________ °C. 1550 1450 1300 1150 1550 1450 1300 1150 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hollow refractory bricks are made by Extrusion Pressing/machine moulding Slip casting Hand moulding Extrusion Pressing/machine moulding Slip casting Hand moulding ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Both A & B Neither A nor B Washing action of metal Corrosion by layer of slag Both A & B Neither A nor B Washing action of metal Corrosion by layer of slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic electric furnace is made of __________ bricks. Silica Chromite None of these Superduty fireclay Silica Chromite None of these Superduty fireclay ANSWER DOWNLOAD EXAMIANS APP
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