Refractory Technology Mcqs for Chemical


Q.  Pyrometric cone equivalent (PCE) value (Segar cone) of ‘Superduty refractories’ is more than 33 which corresponds to a temperature of _____________ °C?

a. 1520
b. 1630
c. 1670
d. 1730


ANSWER: See Answer
 
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MCQs:  Roof of a basic electric furnace is made of _____________ bricks?
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MCQs:  Faster rate of drying of moulded refractories results in high _____________ of refractories?
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MCQs:  Silica refractories are not used in _________________?
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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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