Refractory Technology Mcqs for Chemical

Q.  Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?

a. Aluminium phosphate
b. Water
c. Lime
d. Plaster of Paris


ANSWER: See Answer
 
No explanation is available for this question!
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MCQs:  Semi-silica bricks compared to silica bricks have_______________?
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MCQs:  Which of the following impurities reduces the refractoriness of magnesite bricks ?
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MCQs:  SiO2 percentage in firebrick is about____________________?
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MCQs:  ‘Spinel’, a refractory mineral is chemically represented as____________________?
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MCQs:  With increase in the density of silica refractories, its_______________?
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MCQs:  Mixing of ground refractory material and water is done in a ______________ mill?
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MCQs:  Silicon carbide refractories are used in the _____________?
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MCQs:  Firing temperature of magnesite bricks is about _____________ °C?
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MCQs:  Which of the following is not an acidic refractory?
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MCQs:  Grog__________________?
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MCQs:  Except _____________, all other refractories are bad conductors of electricity (i.e, have low electrical conductivity)?
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MCQs:  Refractoriness of a typical silica brick corresponds to Segar cone number, ’32’, which is equivalent to a temperature of _____________ °C?
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MCQs:  With increase in the alumina content in firebricks, its fusion point (refractoriness) ?
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MCQs:  Insulating refractories should have_______________?
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MCQs:  Which is the stable form of silica below 870°C ?
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MCQs:  Which of the following is not a neutral refractory ?
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MCQs:  Firing temperature is minimum (1250-1400 °C) for _______________ bricks?
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MCQs:  Electrical resistor bars are made of _______________?
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MCQs:  Refractories are dried in the _______________?
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MCQs:  Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage ?
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