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Refractory Technology

Refractory Technology
Outer combustion chamber of blast furnace stove is lined with __________ bricks.

Chrome magnesite
Fireclay
Zirconia
Silica

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Refractory Technology
Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent.

90
55
80
70

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Refractory Technology
Which is the stable form of silica between 1470°C and the melting point 1713°C ?

Quartz
Cristobalite
Tridymite
None of these

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Refractory Technology
Which is the stable form of silica upto 1470°C ?

Quartz
None of these
Tridymite
Cristobalite

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Refractory Technology
Tar dolomite bricks are used in the

Basic Bessemer converter
All of these
Electric furnaces
Basic open hearth furnace

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Refractory Technology
Roof of a basic open hearth furnace is lined with __________ bricks.

Fireclay
Magnesite
Silica
Dolomite

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