Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its High thermal diffusivity Low refractoriness Very high thermal conductivity High co-efficient of expansion upto this temperature High thermal diffusivity Low refractoriness Very high thermal conductivity High co-efficient of expansion upto this temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Silicon carbide Lowduty fireclay Silica Chrome or magnesite Silicon carbide Lowduty fireclay Silica Chrome or magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of a refractory does not depend upon its Composition Firing temperature Texture Shape Composition Firing temperature Texture Shape ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Segar cones are used for the determination of __________ of refractories. Electrical conductivity Resistance to slag attack Spalling resistance Softening temperature Electrical conductivity Resistance to slag attack Spalling resistance Softening temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Regenerators Coke ovens Insulation Muffle furnaces Regenerators Coke ovens Insulation Muffle furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Either A or B; depends on its quantity Does not affect Lowers Increases Either A or B; depends on its quantity Does not affect Lowers Increases ANSWER DOWNLOAD EXAMIANS APP
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