The strongest ligand in the following is

${A_{\left( s \right)}} + {B^ \oplus } \longrightarrow {A^ \oplus } + {B_{\left( s \right)}}\,;\,\Delta {H^o} = - 551.5\,KJ$ Calculate standard electrode potential of cell (in $volt$). .......... $\mathrm{volt}$

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Ethanol is prepared industrially by

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The relative reactivity of $1\,^oH, 2\,^oH$ and $3\,^oH$ in bromination reaction has been found to be $1 : 82 : 1600$ respectively. In the reaction

$\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - C{H_3}(excess) + B{r_2}\xrightarrow{{hv}}}
\end{array}$ $\mathop {\begin{array}{*{20}{c}}
{\,\,\,\,\,C{H_3}} \\
| \\
{C{H_3} - C - C{H_3}} \\
| \\
{\,\,Br}
\end{array}}\limits_{(A)} $ + $\mathop {\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - C{H_2} - Br}
\end{array}}\limits_{(B)} $

the percentage yields of the products $(A)$ and $(B)$ are expected to be

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With the help of following reactions, arrange metals $A$, $B$, $D$ and $E$ in decreasing order of their reactivity

$(I)$ $B + ANO_3 \to B NO_3 + A$

$(II)$ $A + HCl \to ACl + \frac{1}{2}{H_2}$

$(III)$ $D + ECl \to DCl + E$

$(IV)$ $D + HNO_3 \to H_2$ gas is not evolved

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For the reaction ${N_2}(g) + 3{H_2}(g) \to 2N{H_3}(g)$ under certain conditions of temperature and partial pressure of the reactants, the rate of formation of $N{H_3}$ is $0.001\,kg\,{h^{ - 1}}$. The rate of conversion of ${H_2}$ under the same conditions is

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If interionic distance between $Na^+$ and $F^-$ ions is $2.31\,\mathop A\limits^o $ then radii of $Na^+$ and $F^-$ are

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