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प्रश्न
What are the applications of Electrophoresis?
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उत्तर
Applications of electrophoresis:
- On the basis of the direction of movement of the colloidal particles under the influence of the electric field, it is possible to know the sign of the charge on the particles.
- It is also used to measure the rate of migration of sol particles.
- A mixture of colloidal particles can be separated by electrophoresis since different colloidal particles in the mixture migrate at different rates.
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संबंधित प्रश्न
Define the following with a suitable example, of each:
Multimolecular colloid
Define the following with a suitable example, of each:
Gel
Define the term Electrophoresis.
Write Hardy-Sulze rules.
Write a note on Types of emulsion.
Explain the term emulsion and types of emulsions.
Draw labelled diagram of Bredig’s arc method.
Froth and whipped cream are examples of ____________.
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.
The precipitation power of an electrolyte increases with ______.
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. \[\ce{NO^-_3}\]
Mixing of two oppositely charged sols leads to ____________.
Tyndall effect is observed due to ____________.
Smoke is an example of ____________.
Pumice stone is an example of ______.
Which of the following ionic species has highest precipitating power?
In which of the following sols there is low affinity between dispersed phase and dispersion medium?
Freshly prepared precipitate sometimes gets converted to colloidal solution by ______.
Which of the following electrolytes will have maximum coagulating value for AgI/Ag+ solution?
An emulsion cannot be broken by:
(i) heating
(ii) adding more amount of dispersion medium
(iii) freezing
(iv) adding emulsifying agent
How do emulsifying agents stabilise the emulsion?
For coagulating 200 ml of arsenious sulphide sol, 10 ml of 1 m NaCl solution is required find out the flocculation value of NaCl.
In which of the following, the Tyndall effect is not observed?
Smoke is an example of ______.
Van Arkel's method of purification of metals involves converting the metal to a ______.
Starch is an example of which of the following type of colloid?
Identify the correct decreasing order of precipitation power of flocculating ion added, from following.
