Chemical Engineering - Mass Transfer

6.
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as
D0.5
D
1/D
D1.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.
size
durability
porosity
cost
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
__________ is the separation technique used for desalination of sea water.
Thermal diffusion
Reverse osmosis
Adsorption
absorption
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
The relative saturation of a partially saturated mixture of vapour and gas can be increased by __________ of the mixture.
reducing the total pressure
increasing the total pressure
reducing the temperature
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
Danckwerts developed the __________ theory.
penetration
surface renewal
film
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.