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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
Choose the correct option.
The size of colloidal particles lies between ______.
Identify the dispersed phase and dispersion medium in the following colloidal dispersions.
- milk
- blood
- printing ink
- fog
Write a note on Types of emulsion.
Explain Bredig’s arc method.
Explain micelle formation in a soap solution.
Draw labelled diagram Tyndall effect.
Draw labelled diagram Dialysis.
Draw labelled diagram of Bredig’s arc method.
Which type of colloid is formed on the dissolution of soap in water?
Which of the following is an example of liquid-liquid system?
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. \[\ce{NO^-_3}\]
Which of the following is NOT true for lyophilic colloids?
Smoke is an example of ____________.
Which of the following is multimqlecular colloid?
Which of the following compounds forms a colloidal solution when dissolved in water?
In which of the following sols there is low affinity between dispersed phase and dispersion medium?
Which of the following electrolytes will have maximum coagulating value for AgI/Ag+ solution?
Why are some medicines more effective in the colloidal form?
How does the precipitation of colloidal smoke take place in Cottrell precipitator?
Why does bleeding stop by rubbing moist alum?
Why is \[\ce{Fe(OH)3}\] colloid positively charged, when prepared by adding \[\ce{FeCl3}\] to hot water?
Match the items of Column I and Column II.
| Column I | Column II |
| (i) Butter | (a) dispersion of liquid in liquid |
| (ii) Pumice stone | (b) dispersion of solid in liquid |
| (iii) Milk | (c) dispersion of gas in solid |
| (iv) Paints | (d) dispersion of liquid in solid |
For coagulating 200 ml of arsenious sulphide sol, 10 ml of 1 m NaCl solution is required find out the flocculation value of NaCl.
Which of the following substances will precipitate the negatively charge emulsion
Which of the following is most powerful to coagulate the negative colloid?
Blood may be purified by ______.
