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Refractory Technology

Refractory Technology
Fireclay bricks are used in the

All of these
Furnaces allowed to cool frequently
Flues
Chimney linings

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Refractory Technology
Which form of silica has the highest specific gravity?

All of these
Quartz
Cristobalite
Tridymite

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Refractory Technology
Semi-silica bricks compared to silica bricks have

Better spalling resistance
Less fusion point
Both A & B
Neither A nor B

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Refractory Technology
Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors.

Thoria
Corundum
Beryllia
Carborundum

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Refractory Technology
Cold crushing strength of a refractory does not depend upon its

Firing temperature
Composition
Texture
Shape

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Refractory Technology
Hot metal runner in blast furnace are lined with __________ bricks.

Fireclay
Silica
Magnesite
Carborundum

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