What kind of forces exists between adsorbate and adsorbent in physisorption?
  • hydrogen bond
  • ionic bond
  • covalent bond
  • London force
Adsorbate is represented by which spheres in the following diagram.
500_image005.gif
  • White
  • Black
  • both
  • none
Which phenomenon is represented by the following diagram ?
499_image004.jpg
  • adsorption
  • absorption
  • desorption
  • sorption
Which of the following statement is correct about Langmuir's adsorption ?
  • It is not specific in nature
  • It occurs at low temperature
  • It is reversible in nature
  • It forms monolayer
Why shoes, purses and leather items have silica gel pouches kept in them?
  • for absorption of moisture
  • for insect repellant
  • for adsorption of moisture correct
  • for all the above
The relation between extent of adsorbtion (x/m) and pressure at constant temperature is called as:
  • isochore
  • isomer
  • isobar
  • isotherm
Which of the following is the reason for adsorption?
  • internal core molecules are experiencing more inward force
  • surface molecules are experiencing more inward force
  • internal core molecules are experiencing less inward force
  • surface molecules are experiencing less inward force
Which of the following quantity/quantities have negative value during adsorption ?
  • All the above
  • Δ S
  • Δ , H
  • Δ , G
Adsorption is a phenomenon in which a substance:
  • Oxidises or reduces the other substance
  • Remains close to the other substance
  • Accumulates on the surface of another substance
  • Goes into the body of another substance
Freundlich adsorption isotherm is a plot between:
  • x/m and T
  • x/m and p
  • P and T
  • V and T
0 h : 0 m : 1 s

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