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प्रश्न
Why is \[\ce{Fe(OH)3}\] colloid positively charged, when prepared by adding \[\ce{FeCl3}\] to hot water?
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उत्तर
The adsorption of positively charged \[\ce{Fe^{3+}}\] ions by the sol of hydrated ferric oxide results in positively charged colloid.
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संबंधित प्रश्न
Write a note on the Tyndall effect.
Explain Electrophoresis diagramatically.
Explain Bredig’s arc method.
Which of the following is multimolecular colloid?
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. \[\ce{NO^-_3}\]
Tyndall effect is observed due to ____________.
Which of the following is multimqlecular colloid?
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?
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?
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?
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 |
Which of the following substances will precipitate the negatively charge emulsion
Which of the following electrolytes will be most effective in coagulating negative sol?
Blood may be purified by ______.
Van Arkel's method of purification of metals involves converting the metal to a ______.
Identify the correct decreasing order of precipitation power of flocculating ion added, from following.
