Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Remains unchanged Decreases Increases Decreases linearly Remains unchanged Decreases Increases Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves? High strength and density All of these High resistance to spalling High refractoriness High strength and density All of these High resistance to spalling High refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Semi-silica bricks compared to silica bricks have Better spalling resistance Neither A nor B Both A & B Less fusion point Better spalling resistance Neither A nor B Both A & B Less fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its Very high thermal conductivity Low refractoriness High co-efficient of expansion upto this temperature High thermal diffusivity Very high thermal conductivity Low refractoriness High co-efficient of expansion upto this temperature High thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Muffle furnaces Coke ovens Regenerators Insulation Muffle furnaces Coke ovens Regenerators Insulation ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Chromite Carborundum Fireclay Graphite Chromite Carborundum Fireclay Graphite ANSWER DOWNLOAD EXAMIANS APP
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