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Refractory Technology

Refractory Technology
__________ is the measure of the strength of refractory under the combined effect of temperature & load.

RUL
Specific gravity
Porosity
Thermal conductivity

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Refractory Technology
Which is the stable form of silica below 870°C ?

Quartz
Cristobalite
None of these
Tridymite

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Refractory Technology
Mixing of ground refractory material and water is done in a __________ mill.

Ball
Pug
Rod
Tube

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

Alumina
Beryllia
Thoria
Zirconia

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Refractory Technology
Which is not a high alumina refractory?

Dolomite
Corrundum
Mullite
Bauxite

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Refractory Technology
Which of the following bricks should not be used, if the furnace is to be used intermit-tantly?

Sillimanite
Silicon carbide bricks
Silica bricks
Firebricks

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