Chemical Engineering MCQs

Page No. 185

The latent heat of vaporisation__________________?


aDecreases with increased temperature


bDecreases as pressure increases


cBecomes zero at the critical point


d All A., B. & C.


View Answer All A., B. & C.

Atoms of the same element, but of different masses are called__________________?


aIsobars


bIsotonesp


c Isotopes[


dNone of these


View Answer Isotopes

The temperature at which the second Virial co-efficient of a real gas is zero is called the_____________________?


aEutectic point


bBoyle temperature


cBoiling point


dCritical temperature


View Answer Eutectic point

Percentage saturation of a vapor bearing gas is always _____________ the relative saturation?


aHigher than


bSmaller than


cEqual to


dEither A. or B.; depends on the system


View Answer Smaller than

Molar heat capacity of water in equilibrium with ice at constant pressure is_____________________?


a0


b


c1


d None of these


View Answer

The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is_____________________?


aTermed as relative saturation


bNot a function of the composition of gas mixture


cCalled percentage saturation


dNot a function of the nature of vapor



At room temperature, the product [H+] [OH-] in a solution is 10-14 moles/litre. If, [OH-] = 10-6 moles/litre, then the pH of the solution will be ________________________?


a6


b8


c10


d12


View Answer 8

For most salts, the solubility increases with rise in temperature, but the solubility of _______________ is nearly independent of temperature rise?


aSodium chloride


bSodium carbonate monohydrate


cAnhydrous sodium sulphate


dHypo


View Answer Sodium chloride

The chemical nature of an element is independent of_______________________?


aIts atomic number


bThe number of protons or electrons present in it


c The number of neutrons present in it


d None of these



In general, the specific heats of aqueous solutions _____________ with increase in the concentration of the solute?


a Increase


bDecrease


cRemain unchanged


dNone of these


View Answer Decrease

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