Correct Answer:- Option-D
Question39:-The rate of diffusion in gases is about

0; 1.10 /min

B:-1x10-'m /min

ത്ന

D:-1x10-2m /min

Correct Answer:-Question Cancelled
Question40:-Which one of the following is not associated with absorption columns?

A:-Cavitation

B:-Channeling

C:-Flooding

D:-Scrubbing

Correct Answer:- Option-A

Question41:-A plot of partial pressure of the absorbed gas against temperature at
various constant volume is known as

A:-Polytherm
B:-Adsorption isobar
C:-Adsorption isostere
D:-None of the above
Correct Answer:- Option-C
Question42:-Pick out the correct statement:
A:-Fenske equation is used to calculate the minimum reflux ratio in distillation
B:-Fenske equation is used to calculate the optimum reflux ratioin distillation

C:-Fenske equation is used to calculate the minimum number of plates for
constant relative volatility

D:-Fenske equation is used to calculate the minimum number of plates for
multi component distillation

Correct Answer:- Option-C

Question43:-When the Lewis number is equal to 1
A:-Humid heat is almost equal to the specific heat
B:-Concentration boundary layer is present above the thermal boundary layer
C:-Psychrometric line is present above that of the adiabatic saturation line
D:-Psychromatic line is present below the adiabatic saturation line
Correct Answer:- Option-A

Question44:-In Liquid-Liquid extractors, the interface is set in an open section
A:-at the middle of the extractor
B:-at the top or bottom of the extractor