Q.1
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
Q.2
Which can be used as an adsorbent for removal of moisture and controlling humidity in room?
  • Silicon
  • Clay
  • Silica
  • Ceramic
Q.3
In gas masks which substance is used to absorb toxic gases and vapours?
  • Coal powder
  • Animal charcoal
  • Wood charcoal
  • Activated charcoal
Q.4
Adsorption is a
  • Bulk phenomena
  • Surface phenomena
  • Both
  • None of these
Q.5
Micelles are
  • ideal solutions
  • associated colloids
  • adsorbed surfaces
  • macromolecular colloids
Q.6
Lyophobic colloids are
  • irreversible
  • water loving
  • solvent loving
  • reversible
Q.7
Which forms multi molecular layers during adsorption
  • vander waal's adsorption
  • physical adsorption
  • Freundlich adsorption
  • All are correct
Q.8
Physical adsorption
  • increases with increase in temperature
  • decreases with increase in temperature
  • occurs readily at high temperature
  • none
Q.9
Adsorption is invariably an
  • endothermic process
  • exothermic process
  • can't be distinguished
  • both endothermic & exothermic
Q.10
Roushon loves
  • tory
  • Victoria
  • plum
  • all are correct
0 h : 0 m : 1 s