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Refractory Technology

Refractory Technology
Which of the following is not a neutral refractory?

Magnesite
Chromite
Graphite
Silicon carbide

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Refractory Technology
Fireclay bricks are used in the

Furnaces allowed to cool frequently
Chimney linings
Flues
All of these

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Refractory Technology
__________ is not a single oxiderefractory.

Magnesia
Zirconia
Silicon carbide
None of these

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Refractory Technology
The highest melting pure oxide (m.p. > 3000°C) is

Beryllia
Alumina
Zirconia
Thoria

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Refractory Technology
Cold crushing strength of refractories depends upon its

Composition
Texture
All of these
Firing temperature

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Refractory Technology
Which is not a high alumina refractory?

Dolomite
Mullite
Corrundum
Bauxite

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