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Refractory Technology

Refractory Technology
Magnesite bricks have poor resistance to attack by __________ slag.

Acid
Basic
Lime
None of these

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Refractory Technology
Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage?

Tar bonded dolomite bricks
Fireclay bricks
Magnesite bricks
Mullite bricks

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Refractory Technology
Porosity of fireclay refractories is __________ percent.

44129
25-35
43961
35-50

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Refractory Technology
Cold crushing strength of refractories depends upon its

Texture
Composition
Firing temperature
All of these

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Refractory Technology
Periclase is

Amorphous magnesite
ZrSO₄
MgCO₃
Crystalline form of MgO

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Refractory Technology
Maximum apparent porosity of magnesite bricks is about __________ percent.

8
44
24
58

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