Refractory Technology Mcqs for Chemical


Q.  With increase in the porosity, thermal spalling resistance of fireclay brick___________________?

a. Increases
b. Decreases
c. Remain same
d. May increase or decrease


ANSWER: See Answer
 
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MCQs:  Alumina-graphite bricks are used for lining the ____________________?
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MCQs:  The main raw material for manufacture of silicon carbide refractories is_________________?
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MCQs:  Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the_________________?
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MCQs:  High density refractory bricks have lower__________________?
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MCQs:  Fireclay bricks are used in the___________________?
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MCQs:  Carbon refractory blocks ___________________?
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MCQs:  Chromite refractories are used in_______________?
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MCQs:  Maximum apparent porosity of magnesite bricks is about _____________ percent?
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MCQs:  Cold crushing strength of refractories depends upon its_________________?
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MCQs:  Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves ?
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MCQs:  Spalling resistance of a refractory cannot be increased by ____________________?
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MCQs:  High refractoriness of refractory bricks means, that it has a________________?
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MCQs:  To resist spalling tendency, a refractory should have________________?
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MCQs:  Cermets are____________________?
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MCQs:  Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory_________________?
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MCQs:  Hot face insulating linings of high purity alumina fused mullite are used, where_________________?
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MCQs:  Periclase refractory contains mainly________________?
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MCQs:  Silica bricks have low spalling resistance below 600°C, due to its________________?
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MCQs:  Magnesite refractories have low resistance to___________________?
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MCQs:  Which is a basic refractory ?
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