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प्रश्न
Explain Bredig’s arc method.
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उत्तर
- Colloidal sols can be prepared by electrical disintegration using Bredig’s arc method.
- This process involves vaporization as well as condensation.
- Colloidal sols of metals such as gold, silver, platinum can be prepared by this method.
- In this method, an electric arc is struck between electrodes of metal immersed in the dispersion medium.
- The intense heat produced vapourizes the metal which then condenses to form particles of colloidal sol.
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संबंधित प्रश्न
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Choose the correct option.
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Smoke is an example of ____________.
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(i) \[\ce{KCl}\]
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| 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 |
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Identify the colloidal molecule containing hydrophilic head and hydrophobic tail within it.
