MCQ
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- ✓

- B

- C

- D








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$A \,|\, A^+\, (xM)\, ||\, B^+ \,(yM)\, |\, B$
The $emf$ measured is $+ 0.20\, V.$ The cell reaction is

$Ln$ (Lanthanide) $\xrightarrow{{Burn{\text{ }}With{\text{ }}{{\text{O}}_2}{\text{ }}}}Y$
$Ln$ (Lanthanide) $\xrightarrow{{Heated{\text{ }}with{\text{ }}{{\text{N}}_2}}}Z$
$X,\, Y$ and $Z$ are respectively:-
(image) $\xrightarrow{{B{r_3} + C{H_3} - COOH}}A\xrightarrow{{Alc.KOH}}B$ (Product with six membered ring) $\xrightarrow[{(2)\,{H_2}O}]{{(1)\,C{H_3} - MgBr}}C\xrightarrow{{{H^ \oplus } + \Delta }}D\xrightarrow{{HBr(1\,mole)}}E$