A) \[A{{g}_{2}}S+2NaCl\xrightarrow{{}}2AgCl+N{{a}_{2}}S\]
B) \[PbS+2{{O}_{2}}\xrightarrow{{}}PbS{{O}_{4}}\]
C) \[2AgCl+4Hg\xrightarrow{{}}2AgHg+H{{g}_{2}}C{{l}_{2}}\]
D) Both (a) and (c)
Correct Answer: D
Solution :
In the chlorodising roasting the metal or its ore is converted into chloride by heating with a chloride salt. \[A{{g}_{2}}S+2NaCl\xrightarrow{{}}2AgCl+N{{a}_{2}}S\] \[2AgCl+4Hg\xrightarrow{{}}2Ag.Hg+H{{g}_{2}}C{{l}_{2}}\]
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