Chemical Engineering MCQs

Page No. 416

The reverse process of fractional crystallisation is called__________________?


aStripping

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bLeaching

✓


cDifferential distillation

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dAbsorption

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View Answer Leaching

The value of Trouton’s ratio (λb/Tb) for a number of substances is 21 (where, λb = molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and Tb = normal boiling point, °K). The Kistyakowsky equation is used for calculation of Trouton’s ratio of _____________ liquids?


aPolar

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bNon-polar

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cBoth A. & B.

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dNeither A. nor B.

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View Answer Both A. & B.

Which of the following is the Clausius-Clapeyron Equation ?


aPV = RT + B/V + y/V2 + ….

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b(P + a/V2)(V-b) = RT

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cloge (p/p0) = (λ/R) (1/T0 – 1/T)

✓


dp = [RT/(V – b)] – (a/TV2)

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Weight of 56 litres of ammonia at N.T.P. is _____________ gm?


a2.5

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b42.5

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c56

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d2800

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View Answer 42.5

Molality is defined as the number of gm moles of solute per _____________ of solvent?


aLitre

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bkg

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cgm.mole

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dgm

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View Answer kg

A solution with reasonably permanent pH is called a/an _______________ solution?


aIdeal

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bNon-ideal

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cBuffer

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dColloidal

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View Answer Buffer

The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?


aTrouton’s rule

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bKopp’s rule

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cAntoine equation

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dKistyakowsky equation

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View Answer Kopp’s rule

A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is_________________?


aN2O4

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bN2O5

✓


cN2O3

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dNone of these

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View Answer N2O5

For a neutral solution (pH = 7), the value of [H+] [OH-] is equal to_________________?


a0

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b1

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c2

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d3

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View Answer 1

With rise in temperature, the heat capacity of a substance___________________?


aIncreases

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bIncreases

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cRemains unchanged

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dEither A. or B.; depends on the substance

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View Answer Increases

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