How can colloidal solution of sulphur in water be prepared?
Answer:
A colloidal sol of sulphur can be obtained by passing hydrogen sulphide into solution of sulphur dioxide in water or through a solution of an oxidising agent.
SO2 + 2H2S --------> 3S + 2H2O
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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
Out of NH3 and N2 which gas will be adsorbed more readily on the surface of charcoal and why?
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Multiple Choice Questions
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
Convection currents
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Short Answer Type
What is the cause of Brownian movement observed in colloidal solution?
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Tyndall effect is due to?
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State one difference betwen an emulsion and a sol.
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Multiple Choice Questions
According to Langmuir absorption isotherm, the amount of gas adsorbed at very high pressures