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Refractory Technology

Refractory Technology
Fireclay bricks are used in the

Chimney linings
All of these
Flues
Furnaces allowed to cool frequently

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Refractory Technology
Periclase is

Crystalline form of MgO
Amorphous magnesite
ZrSO₄
MgCO₃

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Refractory Technology
Alumina-graphite bricks are used for lining the

Slide gate in teeming laddies
Both A & B
Continuous casting systems
Neither A nor B

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Refractory Technology
Magnesite refractories are used for the construction of those furnaces, which are

Not subjected to fluctuation in temperature
Not required to resist the corrosive action of basic slag
Both (b) and ©
Used for raising & maintaining high temperature

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Refractory Technology
Which of the following is not a high alumina refractory material?

Periclase
Kyanite
Diaspore
Sillimanite

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Refractory Technology
Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm² ) is __________ °C.

1000
>2000
500
>1350

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