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

(1) Ostwald process

(2) Van Arkel Method

(3) Mond Process

(4) Bredig’s Arc Method
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Surface chemistry, preparation of colloids

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Ans. (4) Bredig’s Arc Method

Sol. Bredig’s Arc Method is used for preparation of colloidal sol's of less reactive metal like Au, Ag, Pt.

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