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Refractory Technology

Refractory Technology
Refractories are dried in the

None of these
Rotary kilns
Tunnel kilns
Sun

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

Basic
None of these
Lime
Acid

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Refractory Technology
Cold crushing strength of fireclay bricks is about __________ kgf/cm².

200-400
500-1000
50-100
100-150

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Refractory Technology
SiO₂ percentage in firebrick is about

55-60
80-85
35-40
>94

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Refractory Technology
Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm².

1000
500
10
100

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Refractory Technology
The main raw material for manufacture of silicon carbide refractories is

Carborundum
Corrundum
Periclase
Bauxite

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