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- Engineering
- Colloidal gold is prepared byOption: 1 Mechanical dispersionOption: 2 Peptisation
Colloidal gold is prepared by
Option: 1
Mechanical dispersion
Option: 2
Peptisation
Option: 3
Bredig's Arc Method
Option: 4
Hydrolysis
Answers (1)
Electrical disintegration or Bredig's Arc Method process involves dispersion as well as condensation. Colloidal sols of metals such as gold, silver, platinum, etc. can be prepared by this method. The intense heat of the electric arc vaporise the metal, which then condenses to form colloids.
So, Option 3 is correct.
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