Refractory Technology Which of the following does not occur during firing/burning of refractories? Decrease in crushing strength Vitrification Development of stable mineral form Removal of water of hydration Decrease in crushing strength Vitrification Development of stable mineral form Removal of water of hydration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic open hearth furnace is lined with __________ bricks. Fireclay Magnesite Silica Dolomite Fireclay Magnesite Silica Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? Quartz Cristobalite Tridymite None of these Quartz Cristobalite Tridymite None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Panel test determines the __________ of refractories. Spalling resistance Refractoriness under load (RUL) Fusion point Slag penetration resistance Spalling resistance Refractoriness under load (RUL) Fusion point Slag penetration resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Carborundum Graphite Fireclay Chromite Carborundum Graphite Fireclay Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Zircon Graphite Fireclay Alumina Zircon Graphite Fireclay Alumina ANSWER DOWNLOAD EXAMIANS APP
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