1.

In the chemical reaction \[C{{l}_{2}}+{{H}_{2}}S\to 2HCl+S\], the oxidation number of sulphur changes from       [MP PMT 1999]

A. 0 to 2    
B. 2 to 0
C. - 2 to 0
D. - 2  to - 1
Answer» D. - 2  to - 1


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