Chemical Engineering - Mass Transfer

16.
Radioactive nuclear waste is treated in
mixer-settler extractor
rotating-disc contactor
pulsed column extractor
Bollman extractor
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
Large scale drying of sugar is done in a __________ dryer.
spouted bed
tray
rotary
truck
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.
Dry bulb
Wet bulb
Dew point
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
The drying time between fixed moisture contents within the 'constant rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )
T
T
T1.5
T3
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
__________ equation applies to diffusivities in liquids.
Gilliland
Hirschfelder
Wilke and Chang
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.