Related Questions

A vapour absorption refrigerator uses _________ as a refrigerant.
A Water
B Ammonia
C Freon
D Aqua-ammonia
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and
A Carbon dioxide
B Sulphur dioxide
C Lithium bromide
D R-12
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in
A Decreased solute solubility
B Large minimum liquid to gas (L/G) ratio
C Large number of trays
D All of the above
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be
A 1
B > 1
C ≤ 1
In a gas-liquid absorption coloumn, for obtaining the maximum absorption efficiency
A Liquid stream should be distributed uniformly
B Gas stream should be distributed uniformly
C Both gas as well as liquid streams should be distributed uniformly
D By passing should be completely avoided
Absorption accompanied with chemical reaction is exemplified by the absorption of
A Ammonia in water
B Benzol present in coke oven gas by wash oil
C SO2 in alkaline solution
D All of the above
In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase.
A Liquid
B Gas
C Both A & B
D Neither A nor B
Which of the following cycles uses air as the refrigerant?
A Ericson
B Stirling
C Carnot
D Bell Coleman
Aqua ammonia is used as refrigerant in the following type of refrigeration system
A Compression
B Direct
C Indirect
D Absorption
Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)?
A Freon
B Liquid sulphur dioxide
C Methyl chloride
D Ammonia

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