Search
.Management Sciences
Category: Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water ?
0
A. 90
B. 91.5
C. 95
D. 99
Azeotropism for ethyl alcohol-water system disappears by_____________________?
A. Increasing temperature
B. Decreasing pressure
C. Increasing pressure
D. No means
_____________ is used as an ‘entrainer’ for the separation of acetic acid-water mixture by distillation?
A. Furfural
B. Benzol
C. Butyl acetate
D. Hexane
The most efficient cooling tower out of the following is_____________________?
A. Induced draft
B. Forced draft
C. Natural draft
D. Atmospheric
For the same system, if the same liquid used in an absorber is decreased, the tower height will__________________?
A. Increase
B. Decrease
C. Remain unaffected
D. Decrease or increase; depends on the type of liquid
Refractory bricks are usually dried in a ________________ dryer?
A. Tray
B. Tunnel
C. Conveyor
D. Festoon
Extraction of coffee from its seed is done by___________________?
A. Liquid-liquid extraction
B. Leaching
C. Extractive distillation
D. Steam distillation
In paper industry, paper is dried in a _____________ dryer ?
A. Tunnel
B. Heated cylinder
C. Conveyor
D. Festoon
During the constant rate period of drying of a solid ?
A. Increased air humidity decreases the rate of drying
B. Increasing the air temperature decreases the drying rate
C. Surface evaporation of unbound moisture occurs
D. None of these
Recent Comments