MCQ
Value of $x$ in above reaction is


- ✓$1$
- B$2$
- C$3$
- D$4$


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${\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{ - 4}}\xrightarrow{{MnO_4^ - /{H^ + }}}F{e^{ + 3}} + C{O_2} + NO_3^ - $
