1
Question
Colloidal solutions of metals like gold, silver and platinum are generally prepared by using
Colloidal solutions of metals like gold, silver and platinum are generally prepared by using
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Solution
The correct option is B Bredig's arc method
Electrical disintegration method is also known as Bredig's arc method.
Colloidal sols of metals such as gold, silver, platinum, etc., are prepared by this method.
This process involves both dispersion & condensation.
Here, the electric arc is struck between metal electrodes immersed in the dispersion medium.
The intense heat produced vapourises the metal (dispersion), which then condenses to form particles of colloidal size.
Electrical disintegration method is also known as Bredig's arc method.
Colloidal sols of metals such as gold, silver, platinum, etc., are prepared by this method.
This process involves both dispersion & condensation.
Here, the electric arc is struck between metal electrodes immersed in the dispersion medium.
The intense heat produced vapourises the metal (dispersion), which then condenses to form particles of colloidal size.
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