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प्रश्न
What happens when a beam of light is passed through a colloidal sol.
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उत्तर
- When a beam of light is passed through colloidal sol, it is observed that the colloidal particles scatter some of the incident light in all directions.
- Because of this scattering of light, the path of light through the colloidal dispersion becomes visible to an observer standing at right angles to its path, and the phenomenon is known as the Tyndall effect.
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संबंधित प्रश्न
Choose the correct option.
The size of colloidal particles lies between ______.
Write Hardy-Sulze rules.
Explain the term emulsion and types of emulsions.
Draw labelled diagram Tyndall effect.
Identify the CORRECT statements from the following.
i. The colour of colloidal dispersion depends on size of colloidal particles.
ii. Tyndall effect is used to distinguish between colloidal dispersion and true solution.
iii. Eosin and congo red are examples of negatively charged sols.
Which of the following is a heterogeneous mixture?
Which of the following statements is CORRECT?
The order of coagulating power of following ions in the coagulation of a positive sol is:
i. \[\ce{PO^{3-}_4}\]
ii. \[\ce{SO^{2-}_4}\]
iii. \[\ce{[Fe(CN)6]^{4-}}\]
iv. \[\ce{NO^-_3}\]
Maximum coagulation power is in ____________.
Which of the following is NOT true for lyophilic colloids?
Mixing of two oppositely charged sols leads to ____________.
Smoke is an example of ____________.
Froth is a colloidal solution of ____________.
The movement of colloidal particles towards respective electrode under electric field is called ______.
Which of the following compounds forms a colloidal solution when dissolved in water?
Freshly prepared precipitate sometimes gets converted to colloidal solution by ______.
A colloidal system having a solid substance as a dispersed phase and a liquid as a dispersion medium is classified as ______.
Which of the following process is responsible for the formation of delta at a place where rivers meet the sea?
Gelatin which is a peptide is added in icecreams. What can be its role?
What is collodion?
How do emulsifying agents stabilise the emulsion?
Toluene is oxidised to benzoic acid by
Fog is a colloidal solution of ______.
The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution. Which one of the following processes can explain this?
In which of the following, the Tyndall effect is not observed?
Smoke is an example of ______.
Which of the following electrolytes will be most effective in coagulating negative sol?
Van Arkel's method of purification of metals involves converting the metal to a ______.
Identify positively charged sol from following.
