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Q.

Colloidal gold can be prepared by

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a

Hydrolysis

b

Bredig’s Arc method

c

By reduction of AuCl3

d

Peptization

answer is A, B.

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Detailed Solution

  • Bredigs arc method is a method of preparation of colloidal solution, of metals such as gold, silver or platinum 
  • By reduction of AuCl3∣
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