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Refractory Technology

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

Bauxite
Periclase
Corrundum
Carborundum

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Refractory Technology
Which of the following is not a neutral refractory?

Magnesite
Chromite
Silicon carbide
Graphite

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

Quartz
None of these
Tridymite
Cristobalite

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Refractory Technology
Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors.

Carborundum
Corundum
Beryllia
Thoria

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Refractory Technology
Zirconia refractories are not used in

Lining high temperature ceramic kilns
Furnaces subjected to fluctuating temperature
Making sheaths for thermocouple
High frequency induction furnaces in the form of inductors

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Refractory Technology
Dilatometer is used for the determination of __________ of refractories.

Permanent linear change
Resistance to CO attack
RUL
Modulus of rupture

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