Refractory Technology Mcqs for Chemical


Q.  Carborundum used for making crucibles for melting non-ferrous metals is chemically________________?

a. Silicon carbide
b. Silicon nitride
c. Crystalline magnesia
d. Zirconium sulphate


ANSWER: See Answer
 
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MCQs:  Fireclay bricks are not used in the_________________?
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MCQs:  Permeability of bricks is a measure of the___________________?
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MCQs:  Faster rate of drying of moulded refractories results in high ______________ of refractories?
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MCQs:  Refractories used in/for ______________ should have low thermal conductivity?
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MCQs:  Lower wall courses of soaking pits are made of _____________ bricks to avoid the action of molten slag & scale?
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MCQs:  A vapor whose partial pressure is less than its equilibrium vapor pressure is called a ______________ vapor?
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MCQs:  Applicability of Clausius-Clapeyron Equation is subject to the condition that the __________________?
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MCQs:  The reaction A + B → C has been conducted in a reactor as shown below. The number of boundaries around which material balance can be written, are_________________?
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MCQs:  Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is_______________?
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MCQs:  Concentration of a solution expressed in terms of _______________ is independent of temperature?
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MCQs:  Othmer chart is useful in estimating the heat of_______________?
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MCQs:  Pick out the wrong unit conversion of heat transfer rate?
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MCQs:  °API gravity of water at N.T.P. is about__________________?
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MCQs:  Which of the following is insensitive to changes in pressure ?
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MCQs:  1 BTU/lb.←°F is equivalent to ____________ kcal/kg.°C?
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MCQs:  A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c?
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MCQs:  An equation for calculating vapour pressure is given by, log10 P = A – B(t + c). This is called the________________?
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MCQs:  The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are________________?
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MCQs:  Dry air is a mixture of__________________?
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MCQs:  For an ideal solution, the total vapor pressure varies _____________ with the composition (expressed as mole fraction)?
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