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Which of the following will result in a...

Which of the following will result in a colloidal sol ?

A

`Cu + HgCl_(2) to CuCl_(2)+Hg`

B

`2HNO_(3)+3H_(2)S to 3S +4H_(2)O +2NO`

C

2Mg+CO2 to 2MgO+C

D

Cu+CuCl2 to Cu2Cl2

Text Solution

Verified by Experts

The correct Answer is:
B
Sulphur formed in the reaction is in colloidal state and the solution hay yellow colour.
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