Refractory Technology Which is the stable form of silica upto 1470°C ? Cristobalite None of these Quartz Tridymite Cristobalite None of these Quartz Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the Insulation of high temperature furnaces Hearth of the blast furnace Nuclear reactors, missiles & space crafts Roof of electric furnaces Insulation of high temperature furnaces Hearth of the blast furnace Nuclear reactors, missiles & space crafts Roof of electric furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Neither A nor B Neutral Oxidising Either A or B Neither A nor B Neutral Oxidising Either A or B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under load (RUL) is the most important property for the refractory bricks Used for furnace insulation None of these Used in the roof of the furnace At the hearth bottom of the furnace on which stock is placed Used for furnace insulation None of these Used in the roof of the furnace At the hearth bottom of the furnace on which stock is placed ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of zircon to silica refractory brick improves its Neither A nor B Crushing strength Neither A nor B Resistance to slag attack Neither A nor B Crushing strength Neither A nor B Resistance to slag attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage? Fireclay bricks Mullite bricks Magnesite bricks Tar bonded dolomite bricks Fireclay bricks Mullite bricks Magnesite bricks Tar bonded dolomite bricks ANSWER DOWNLOAD EXAMIANS APP
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