A) 7 to 4
B) 6 to 4
C) 7 to 2
D) 4 to 2
Correct Answer: C
Solution :
\[2KMn{{O}_{4}}+3{{H}_{2}}S{{O}_{4}}+5{{C}_{2}}{{H}_{2}}{{O}_{4}}\to \]\[2M{{n}^{2+}}+8{{H}_{2}}O+10\,C{{O}_{2}}\]
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