Chemical Engineering MCQs

6108 MCQs  (Page 163 of 611)

Attempt Chemical Engineering Quiz
For gas absorption, low viscosity solvents are preferred, because of their ____________________?
A. Better flow characteristics
B. Low pumping pressure drop
C. Rapid absorption rates
D. All a., b. and c.
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Pressure drop through plate tower as compared to that through packed tower, for the same duty will be___________________?
A. Less
B. More
C. Equal
D. Either a. or b.; depends on the packing height
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Desulphurisation of petrol is done in a _____________________?
A. Bollman extractor
B. Rotating disc extractor
C. Packed extraction column
D. Plate type extraction column
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Henry’s law states that the ________________________?
A. Partial pressure of a component over a solution is proportional to its mole fraction in the
LiqUid
B. Partial pressure of a component over a solution is proportional to the mole fraction in the
VapOur
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A 25 cm × 25 cm × 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m × 1m × 1cm flat sheet of the same material is to be dried from one side only. Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is ____________________?
A. 1000
B. 1500
C. 2000
D. 2500
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Swenson-Walker crystalliser is a __________________ unit ?
A. Continuous
B. Batch
C. Semi-batch
D. Cooling (adiabatic)-cum-evaporation
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The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?
A. Differential heat of adsorption
B. Heat of wetting
C. Integral heat of adsorption
D. None of these
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Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the ___________________ moisture ?
A. Unbound
B. Critical
C. Free
D. Bound
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For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be ___________________?
A. 1
B. 0
C. 2
D. 3
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With increase in temperature, the leaching rate increases because of the _____________________?
A. Increased diffusivity
B. Decreased viscosity of liquid
C. Both a. and b.
D. Neither a. nor b.
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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