Refractory Technology Mcqs for Chemical

Q.  Which is the stable form of silica upto 1470°C ?

a. Quartz
b. Cristobalite
c. Tridymite
d. None of these


ANSWER: See Answer
 
No explanation is available for this question!
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MCQs:  Insulating refractories should have_______________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Which is the stable form of silica below 870°C ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Which of the following is not a neutral refractory ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Firing temperature is minimum (1250-1400 °C) for _______________ bricks?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Electrical resistor bars are made of _______________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Refractories are dried in the _______________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  An indication of degree of firing in silica brick is its____________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Which is not an alumino-silicate refractory ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Resistance to slag attack of a refractory _____________________?
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MCQs:  Fireclay bricks are never used in the______________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Magnesite bricks are used in those parts of furnaces, which are __________________?
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MCQs:  High thermal conductivity of a refractory material is not important, when it is to be used in the______________________?
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MCQs:  Pyrometric cone equivalent (PCE) value (Segar cone) of ‘Superduty refractories’ is more than 33 which corresponds to a temperature of _____________ °C?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Basic bricks are not made of ___________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  A steel member used in the furnace construction to take the thrust of the brickwork is called___________________?
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MCQs:  Hollow refractory bricks are made by___________________?
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MCQs:  Refractoriness/fusion points of ‘Superduty’ refractories is _______________ °C?
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MCQs:  With increase in the porosity, thermal spalling resistance of fireclay brick___________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts