Chemical Engineering MCQs

Page No. 185

The latent heat of vaporisation__________________?


aDecreases with increased temperature

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bDecreases as pressure increases

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cBecomes zero at the critical point

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d All A., B. & C.

✓


View Answer All A., B. & C.

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


aIsobars

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bIsotonesp

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c Isotopes[

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dNone of these

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View Answer Isotopes

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


aEutectic point

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bBoyle temperature

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cBoiling point

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dCritical temperature

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View Answer Eutectic point

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


aHigher than

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bSmaller than

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cEqual to

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dEither A. or B.; depends on the system

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View Answer Smaller than

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


a0

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b∞

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c1

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d None of these

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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

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bNot a function of the composition of gas mixture

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cCalled percentage saturation

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dNot a function of the nature of vapor

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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

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b8

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c10

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d12

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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

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bSodium carbonate monohydrate

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cAnhydrous sodium sulphate

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dHypo

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View Answer Sodium chloride

The chemical nature of an element is independent of_______________________?


aIts atomic number

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bThe number of protons or electrons present in it

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c The number of neutrons present in it

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d None of these

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


a Increase

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bDecrease

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cRemain unchanged

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dNone of these

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View Answer Decrease

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