Chemical Engineering MCQs

Page No. 416

The reverse process of fractional crystallisation is called__________________?


aStripping


bLeaching


cDifferential distillation


dAbsorption


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


bNon-polar


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

Which of the following is the Clausius-Clapeyron Equation ?


aPV = RT + B/V + y/V2 + ….


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


cloge (p/p0) = (λ/R) (1/T0 – 1/T)


dp = [RT/(V – b)] – (a/TV2)



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


a2.5


b42.5


c56


d2800


View Answer 42.5

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


aLitre


bkg


cgm.mole


dgm


View Answer kg

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


aIdeal


bNon-ideal


cBuffer


dColloidal


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


bKopp’s rule


cAntoine equation


dKistyakowsky equation


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


bN2O5


cN2O3


dNone of these


View Answer N2O5

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


a0


b1


c2


d3


View Answer 1

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


aIncreases


bIncreases


cRemains unchanged


dEither A. or B.; depends on the substance


View Answer Increases

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