Chemical Engineering MCQs

Page No. 409

1 kg/cm2 is equal to________________?


a760 torr


b1 KPa


c10 metres of water column


d1 metre of water column



One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m3. It cools to 98°C; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m3. The latent heat of condensation (kJ/kg-1 ) under these conditions is___________________?


a40732


b2676


c2263


d540


View Answer 2263

The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be_________________?


a10-11


b10-10


c10-3


d10-4


View Answer 10-11

For estimation of heat capacity of a solid compound, one can use________________?


aClapeyron’s equation


bGibb’s equation


cKopp’s rule


dTrouton’s rule


View Answer Kopp’s rule

40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is_________________?


a1/2


b1/3


c1/4


d2/3


View Answer 1/3

Which of the following holds good for a solution obeying Raoult’s law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing) ?


aΔH = 1 (+ ve) and Δ V = -ve


bΔH = 0


cΔV = 0


dBoth B. and C.


View Answer Both B. and C.

The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of_________________?


aFormation


bSolution


cCombustion


dFusion


View Answer Formation

Raoult’s law is obeyed by a _____________ solution?


aSaturated


bMolar


cNormal


dNone of these


View Answer None of these

On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes_________________?


a1


b8


c4


d2


View Answer 4

Cp equals Cv at________________?


a0°C


b0°K


c0°F


d0°R


View Answer 0°K

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