Refractory Technology Mcqs for Chemical


Q.  Si percentage in silica refractories used in the walls of coke oven is about______________________?

a. 45
b. 60
c. 80
d. 95


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MCQs:  Graphite or carbon refractories______________________?
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MCQs:  Zirconia refractory_________________?
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MCQs:  Carbon refractories have very high __________________?
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MCQs:  An ideal refractory should have high__________________?
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MCQs:  Fusion point of an acidic refractory material is________________?
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MCQs:  Segar cones are used for the determination of ____________ of refractories?
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MCQs:  Porosity is induced in insulating refractories by adding________________?
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MCQs:  Machine moulding of dry mixture of refractories requires a pressure of the order of _____________ kg/cm2?
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MCQs:  Carbon bricks are not used in the lining of the_________________?
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MCQs:  Grog addition in fireclay during brick manufacture is done to_________________?
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MCQs:  Which of the following does not occur during firing/burning of refractories ?
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MCQs:  Conversion of silica mineral to Cristobalite is accompanied by reduction in its ____________________?
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MCQs:  Magnesite chrome bricks are used in the___________________?
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MCQs:  Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?
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MCQs:  Periclase is___________________?
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MCQs:  RUL of refractories depends on the _____________________?
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MCQs:  Which one contains maximum percentage of Al2O3 ?
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MCQs:  Which is not a basic refractory ?
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MCQs:  Silica refractories__________________?
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MCQs:  Firing of refractory brick is done to __________________?
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