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- 1. Multiple Choice
Adsorption is a
Bulk phenomena
Surface phenomena
Both
None of these
- 2. Multiple Choice
Rough surface of an adsorbent has
More porus
Non porus
More active centres
Less active centres
- 3. Multiple Choice
In gas masks which substance is used to absorb toxic gases and vapours?
Coal powder
Animal charcoal
Wood charcoal
Activated charcoal
- 4. Multiple Choice
Absorption is a
Bulk phenomena
Surface phenomena
Both
None of these
- 5. Multiple Choice
Which can be used as an adsorbent for removal of moisture and controlling humidity in room?
Silicon
Clay
Silica
Ceramic
- 6. Multiple Choice
The amount of heat evolved when one mole of a gas is adsorbed on a solid surface is called as
Molar enthalpy of absorption
Molar enthalpy of desorption
Molar enthalpy of adsorption
entropy of adsorption
- 7. Multiple Choice
Physisorption is held by
Covalent forces
Chemical forces
Vander Waal forces
Centrifugal forces
- 8. Multiple Choice
Chemisorption is held by
Covalent bond
Chemical forces
Van der Waal forces
Centrifugal
- 9. Multiple Choice
Surface compound formation takes place in
Physical adsorption
Desorption
Chemical adsorption
Sorption
- 10. Multiple Choice
When the concentration of adsorbate is more on the surface than the bulk of the adsorbent it is called as
Positive adsorption
Negative adsorption
Positive absorption
Negative absorption
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