Refractory Technology Fusion point of a basic refractory material is Increased by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Increased by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Fireclay Carborundum Graphite Chromite Fireclay Carborundum Graphite Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a neutral refractory? Magnesia Graphite Silica Magnesite chrome Magnesia Graphite Silica Magnesite chrome ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Crushing strength of a refractory Increases with rise in service temperature Decreases with increase in porosity Decreases with rise in service temperature Is unaffected with change in service temperature Increases with rise in service temperature Decreases with increase in porosity Decreases with rise in service temperature Is unaffected with change in service temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories are exclusively used in the Regenerators of coke oven Side wall of soaking pits Hearth of blast furnace Walls of coke oven Regenerators of coke oven Side wall of soaking pits Hearth of blast furnace Walls of coke oven ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases linearly Increases Remains unchanged Decreases Decreases linearly Increases Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
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