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For the Redox reaction
\[
\mathrm{xFe}^{2+}+\mathrm{yCr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{zH}^{+} \rightarrow \mathrm{Fe}^{3+}+\mathrm{Cr}^{3+}+\mathrm{H}_{2} \mathrm{O}
\]
\( x, y \) and \( z \) are :-
\begin{tabular}{|l|l|l|l|}
\hline & \( x \) & \( y \) & \( z \) \\
\hline\( (1) \) & 3 & 1 & 14 \\
\hline\( (2) \) & 6 & 1 & 7 \\
\hline\( (3) \) & 3 & 2 & 14 \\
\hline\( (4) \) & 6 & 1 & 14 \\
\hline
\end{tabular}
\( \mathrm{P} \)
W
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