Related Questions

In physical adsorption, as compared to chemisorption, the
A Quantity adsorbed per unit mass is higher
B Rate of adsorption is controlled by the resistance to surface reaction
C Activation energy is very high
D Heat of adsorption is very large
Chemisorption (chemical adsorption) is
A Same as "Van der Waals" adsorption
B Characterised by adsorption of heat
C An irreversible phenomenon
D A reversible phenomenon
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
Physical absorption is
A An irreversible phenomenon
B A reversible phenomenon
C Accompanied by evolution of heat
D Both B & C
When storage space is scarce and physical records cannot span pages, creating multiple physical records from one logical relation will minimize wasted storage space.
A True
B False
__________ is the physical surroundings or the physical facility where the service is produced, delivered and consumed.
A Servicespace
B Servicescape
C Serviceplace
D Servicescope

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