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JEE Main20202 Sep 2020Morning ShiftChemistrySurface ChemistryActual

Which of the following is used for the preparation of colloids ?

Options

  1. AOstwald process
  2. BVan Arkel Method
  3. CBredig's Arc Method
  4. DMond Process

Correct answer

C. Bredig's Arc Method

Step-by-step solution

Bredig’s Arc Method is used for preparation of colloidal sol’s of less reactive metal like Au, Ag, Pt. Ostwald process is used for preparation of nitric acid. Van Arkel method is used for refining Zirconium or Titanium. The Mond process is a method for refining nickel. The nickel oxide and impurities react with the hydrogen gas to form an impure solid nickel.

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