A) \[FeS{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\]
B) \[FeS+dil.\ {{H}_{2}}S{{O}_{4}}\]
C) \[FeS+\text{conc}\text{. }{{H}_{2}}S{{O}_{4}}\]
D) Elementary \[{{H}_{2}}\]+ elementary S
Correct Answer: B
Solution :
\[FeS+{{H}_{2}}S{{O}_{4}}\to FeS{{O}_{4}}+{{H}_{2}}S\]
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