How \[{{H}_{2}}S\] is liberated in laboratory [JEE Orissa 2004] – McqOptions

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1.	How \[{{H}_{2}}S\] is liberated in laboratory [JEE Orissa 2004]
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
Answer» C. \[FeS+\text{conc}\text{. }{{H}_{2}}S{{O}_{4}}\]

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