Which is an example of chlorodising roas...

Which is an example of chlorodising roasting:

A

`Ag_2S+2NaCIrarr2AgCI+Na_2S`

B

`PbS+2O_2rarrPbSO_4`

C

`AgCI+2HgrarrAgHg+HgCI`

D

Both (a) and ©

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The correct Answer is:

D

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