Adsorption involves attracting molecules of adsorbate on surface of the adsorbent. Due to this, energy is released and thus heat of adsorption is negative i.e. adsorption is always exothermic.
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Multiple Choice Questions
The blue colour of water in the sea is due to
Refraction of the blue light by the impurities in sea water.
Reflection of blue sky by sea water.
Scattering of blue light by water molecules.
Absorption of other colours except blue colour by water molecules.
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Short Answer Type
State one difference betwen an emulsion and a sol.
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Out of NH3 and N2 which gas will be adsorbed more readily on the surface of charcoal and why?
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What is the cause of Brownian movement observed in colloidal solution?
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Multiple Choice Questions
According to Langmuir absorption isotherm, the amount of gas adsorbed at very high pressures
reaches a constant limiting value
goes on increasing with pressure
goes on decreasing with pressure
increases first and decreases later with pressure
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Short Answer Type
How can colloidal solution of sulphur in water be prepared?
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Tyndall effect is due to?
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Multiple Choice Questions
The sky looks blue due to
dispersion effect
Reflection
Transmission
Scattering
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The Brownian motion is due to
Temperature fluctuation within the liquid phase
Attraction and repulsion between charges on the colloidal particles
Impact of molecules of the dispersion medium on the colloidal particles
