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Which of the following reaction is used ...

Which of the following reaction is used to prepare colloidal sol by double decomposition?

A

`As_2 O_3 + 3H_2 S to As_2 S_3 + 3H_2 O`

B

`2AuCl_3 . 3HCHO + 3H_2 O to 2Au + 3HCOOH + 6HCl`

C

`SO_2 + 2H_2 S to 3S+ 2H_2 O`

D

`FeCl_3 + 3H_2 O to Fe(OH)_3 + 3HCl`

Text Solution

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The correct Answer is:
A
Theory based.
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