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प्रश्न
Define the term Electrophoresis.
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उत्तर
The movement of colloidal particles under an applied electric potential is called electrophoresis.
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संबंधित प्रश्न
Comment on the statement that “colloid is not a substance but a state of substance”.
Define the following with a suitable example, of each:
Gel
Write a note on Types of emulsion.
What are the applications of Electrophoresis?
What happens when a beam of light is passed through a colloidal sol.
Explain Bredig’s arc method.
Which type of colloid is formed on the dissolution of soap in water?
Which one of the following methods is used to make platinum sol?
Which of the following is multimolecular colloid?
Mist is a colloidal solution of ____________.
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 ____________.
Mixing of two oppositely charged sols leads to ____________.
Froth is a colloidal solution of ____________.
Which of the following can form colloidal sol with water?
Which of the following ionic species has highest precipitating power?
Which of the following substances will precipitate the negatively charged emulsions?
(i) \[\ce{KCl}\]
(ii) glucose
(iii) urea
(iv) \[\ce{NaCl}\]
What happens when electric field is applied to colloidal solution?
A colloid is formed by adding \[\ce{FeCl3}\] in excess of hot water. What will happen if excess sodium chloride is added to this colloid?
How do emulsifying agents stabilise the emulsion?
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 |
Cloud is an example of
The migration of dispersion medium under the influence of an electric potential is called ______.
In which of the following, the Tyndall effect is not observed?
Which of the following is most powerful to coagulate the negative colloid?
Which of the following electrolytes will be most effective in coagulating negative sol?
Identify the correct decreasing order of precipitation power of flocculating ion added, from following.
