The most common lanthanide is

$\underset{(A)}{\mathop{\begin{matrix}
O \\
|| \\
C{{H}_{3}}-C-C{{H}_{3}}, \\
\end{matrix}}}\,\,\,\,\,\underset{(B)}{\mathop{\begin{matrix}
\,\,\,\,\,\,O \\
\,\,\,\,\,\,|| \\
C{{H}_{3}}-C-H, \\
\end{matrix}}}\,\,\,\,\,\underset{(C)}{\mathop{\begin{matrix}
O\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
||\,\,\,\,\,\,\,\,\,\,\, \,\, \\
C{{H}_{3}}-C-C{{H}_{2}}-Cl, \\
\end{matrix}}}\,$ $\,\,\underset{(D)}{\mathop{\begin{matrix}
O \\
|| \\
H-C-H, \\
\end{matrix}}}\,\,\,\,\underset{(E)}{\mathop{\begin{matrix}
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|| \\
Cl-C{{H}_{2}}-C-H \\
\end{matrix}}}\,$

→

Calculate $E_{cell}$ .............. $\mathrm{V}$

$Pt(s)|\mathop {{H_2}(g)}\limits_{1\ atm} |HA\,\,\,\,\,\mathop {1\,M}\limits_{({K_a} = {{10}^{ - 7}})} \,\,||\,HB\,\,\,\,\,\mathop {1\,M}\limits_{({K_1} = {{10}^{ - 5}})}$

$\,|\mathop{{H_2}(g)}\limits_{1\ atm} |Pi(s)$

→

Which of the following compound on ozonolysis give a compound that give silver mirror with tollen's reagent ?

→

Identify products $A$ and $B$