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Refractory Technology

Refractory Technology
Silicon carbide refractories are used in the

All of these
Zinc smelting furnace
Muffle furnace
Ceramic recuperators

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Refractory Technology
'Super refractories' are made from pure

Nitrides
Carbides
Oxides
Borides

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Refractory Technology
Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called

Spalling resistance
Refractoriness
Refractoriness under load (RUL)
None of these

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Refractory Technology
Ferromagnetic ceramic material is not used in the

Television sets
Magnetic switches
Thermal insulation
Transformers

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Refractory Technology
Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm².

100
10
500
1000

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Refractory Technology
Addition of zircon to silica refractory brick improves its

Resistance to slag attack
Crushing strength
Neither A nor B
Neither A nor B

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