Increases pressure drop, increases surface area
Increases pressure drop, decreases surface area
Decreases pressure drop, increases surface area
Decreases pressure drop, decreases surface area
✅ The correct answer is option C.
Mass Transfer MCQs
For gas absorption, low viscosity solvents are preferred, because of their
Better flow characteristics
Low pumping pressure drop
Rapid absorption rates
All of the above
✅ The correct answer is option D.
In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the
Range is 15°F
Approach is 10°F
Both A & B
Neither A nor B
✅ The correct answer is option C.
Diameter to height ratio for a rashig ring is
1
0.5
2
8
✅ The correct answer is option A.
Steady state equimolal counter diffusion occurs in case of
Leaching
Absorption
Binary phase distillation
Liquid-liquid extraction
✅ The correct answer is option C.
Azeotropism for ethyl alcohol-water system disappears by
Increasing temperature
Decreasing pressure
Increasing pressure
No means
✅ The correct answer is option B.
Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent
A pure component
A binary mixture
A ternary mixture
Partially miscible ternary system
✅ The correct answer is option B.
The main reason for dividing a tall packed tower into series of small towers is to
Minimise the overall pressure drop
Avoid flooding
Reduce liquid hold up
Avoid channeling
✅ The correct answer is option D.
Which of the following is not a continuous drier?
Drum drier
Spray drier
Tunnel drier
Tray drier
✅ The correct answer is option D.
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.
Tunnel
Tray
Rotary
None of these
✅ The correct answer is option C.