The gas molecules are held on solid surface by                    in physical adsorption.

Related MCQs

• Adsorption when interaction between the solid and the condensed molecules is relatively strong as contrasted with physical adsorption.
• In Langmuir’s model of adsorption of a gas on a solid surface the mass of gas striking a given area of surface is                             to the pressure of the gas.
• The physical process that occurs when gas or liquid molecules are brought into contact with a solid surface and condense on the surface
• Which of the following statements regarding the physical adsorption of a gas on surface of solid is not correct?
• Adsorption of methane follows the Langmuir adsorption isotherm at 90K. If p = 1.896cm3g-1bar-1 and b = 0.146bar-1. Calculate the value of θ.
• The extent of adsorption of a gas on a solid depend on
• Which of the following isotherm is applicable to physical adsorption?
• For an adsorbant-adsorbate system obeying the Langmuir adsorption isotherm, b = 0.48 bar-1 and p = 0.16 bar-1. At what pressure will 50% of the surface be covered?
• The desorption curve is higher than the adsorption curve.
• Adsorption process must be