Related Questions

Chemisorption compared to physical absorption has
A Lower adsorption rate
B Lower capacity of the solvent for the solute gas
C Increased utilisation of stagnant zones of the liquid phase
D None of these
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
In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole.
A 100
B 1000
C 10000
D 100000
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is
A Equal to the heat of formation of surface compound
B Equal to the heat of wetting
C Zero
D Called integral heat of adsorption
When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.
A Always lower than
B Always higher than
C Same as
D Dependent on the system; can be either lower or higher than
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
A model in which one physical property is used to represent another physical property is known as:
A analog model
B deterministic model
C iconic model
D decision theory model
E None of the above
Removal of __________ exemplifies an adsorption unit operation.
A Uranium from its ore
B Water from petrol
C Ammonia from coke oven gas
D Mustard oil from mustard seed
With increase in the concentration of the adsorbate, the integral heat of adsorption
A Increases
B Decreases
C Remains unchanged
D May increase or decrease ; depends on the type of adsorbate

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