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Question
Bredig's arc method involves :
Bredig's arc method involves :
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Solution
The correct option is C Dispersion as well as condensation of metal particles
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.
Thus, option (c) is the correct answer.
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.
Thus, option (c) is the correct answer.
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