Chemical Engineering MCQs

Page No. 177

What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope ?


a 0


b2


c1


d3


View Answer 1

In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by___________________?


a High temperature


bLow pressure


c Low temperature only


dBoth low temperature and high pressure



Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be__________________?


a580


b640


c 1160


d Data insufficient; can’t be computed


View Answer 1160

Joule-Thomson co-efficient for a perfect gas is_____________________?


a Zero


bPositive


cnegative


dNone of these


View Answer Zero

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will_________________?


aIncrease


b Decrease


c Remain unchanged


dFirst fall and then rise


View Answer Increase

Equation which relates pressure, volume and temperature of a gas is called the__________________?


a Equation of state


b Gibbs Duhem equation


c Ideal gas equation


dNone of these


View Answer Equation of state

At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be________________?


aMore


bLess


cSame


dMore or less; depending on the system


View Answer Same

Mollier diagram is a plot of___________________?


a Temperature vs. enthalpy


bTemperature vs. enthalpy


cEntropy vs. enthalpy


d Temperature vs. internal energy


View Answer Entropy vs. enthalpy

The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the ____________ temperature?


aCritical


bBoyle


cInversion


dReduced


View Answer Boyle

Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are_______________?


aAlways greater than one


b Same at the same reduced temperature


c Same at the same reduced temperature


dBoth B. & C


View Answer Both B. & C

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