IndiaBIX

Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 7
26.
Pick out the wrong statement:
Absorption factor is constant, when the equilibrium and operating lines are straight.
In case of a stripper, the equilibrium curve is always below the operating line.
In case of an absorber, the operating line is always above the equilibrium curve.
In the absorption of low solubility gases, the liquid film is the controlling resistance.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
In liquid extraction, if the selectivity is unity, then
separation of the constituents is the most effective.
no separation will occur.
amount of solvent required will be minimum.
solvent flow rate should be very low.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Paper industry employs __________ driers.
cylinder
rotary
spray
fluidised bed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Which of the following has the same dimension as mass diffusivity ?
Momentum flux
Kinematic viscosity
Thermal diffusivity
Both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Pick out the wrong statement pertaining to the cooling towers.
In case of induced draft cooling tower, the fan is placed at the top of the tower.
Effectiveness of forced draft cooling tower is reduced by the recirculation of the humid and hot discharged air.
A natural draft cooling tower is recommended to be used, when the air humidity is low and air temperature is also low.
Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers