Chemical Engineering MCQs

Page No. 423

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_______________?


a0


b1


c2


d3


View Answer 0

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_________________?


a1


b6


c3


d4


View Answer 4

Applicability of Clausius-Clapeyron Equation is subject to the condition that the __________________?


aVapor follows ideal gas law


bVolume in the liquid state is negligible


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

A vapor whose partial pressure is less than its equilibrium vapor pressure is called a ______________ vapor?


aSaturated


bSupersaturated


cSupersaturated


dNone of these


View Answer Supersaturated

Lower wall courses of soaking pits are made of _____________ bricks to avoid the action of molten slag & scale?


aChrome or magnesite


bSilicon carbide


cSilica


dLow duty fireclay


View Answer Chrome or magnesite

Refractories used in/for ______________ should have low thermal conductivity?


aCoke ovens


bCoke ovens


cRegenerators


dMuffle furnaces


View Answer Coke ovens

Which is a neutral refractory ?


aGraphite


bMagnesite chrome


cSilica


dMagnesia


View Answer Graphite

With increase in the porosity, thermal spalling resistance of fireclay brick_______________?


aIncreases


bDecreases


cRemain same


dMay increase or decrease


View Answer Increases

Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called_________________?


aSpalling resistance


bRefractoriness


cRefractoriness under load (RUL)


dNone of these


View Answer Spalling resistance

Pick out the wrong statement pertaining to the design of a basket type evaporator ?


aIt is used for high viscosity liquor having large rate of scaling


bThe tube bundle is suspended on bracket


cThere is no central downtake


dDowntake is formed by the annular space between the bundle and the shell



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