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REFRACTORY TECHNOLOGY

Refractory Technology
Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity).

Carborundum
Chromite
Graphite
Fireclay

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Refractory Technology
Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone.

Cooling
Preheating
All of these
Burning

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Refractory Technology
Which one contains maximum percentage of Al2O₃ ?

Firebrick
Magnesite
Sillimanite
Aluminous firebrick

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Refractory Technology
Which brick undergoes maximum shrinkage on drying?

Tar bonded dolomite bricks
Chromite bricks
Fireclay bricks
Magnesite bricks

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Refractory Technology
__________ is not a single oxiderefractory.

Magnesia
Zirconia
Silicon carbide
None of these

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