In which of the following reactions conc. `H_(2)SO_(2)` is used as an oxidising reagent ?
In which of the following reactions conc. `H_(2)SO_(2)` is used as an oxidising reagent ?
A. `CaF_(2)+H_(2)SO_(4) to CaSO_(4)+2HF`
B. `2HI+H_(2)SO_(4) to I_(2)+SO_(2)+2H_(2)O`
C. `Cu+2H_(2)SO_(4) to CuSO_(4)+SO_(2)+2H_(2)O`
D. `NaCl+H_(2)SO_(4) to NaHSO_(4)+HCl`
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Correct Answer - B::C
In both these reactions, conc. `H_(2)SO_(4)` is used as an oxidising agent.
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