MCQ
Which method of estimation is shown in the figure given below?


- ✓Carius method.
- BKjeldahl's method.
- CDuma's method.
- DNone of these.

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$xMnO_4^ - \, + \,y{C_2}O_4^{2 - }\, + \,z{H^ + }\, \rightarrow $$\,xM{n^{2 + }} + 2yC{O_2} + \frac{z}{2}{H_2}O$
The value's of $x, y$ and $z$ in the reaction are, respectively :