On electricity flow the concentration of anode solution in galvan…

Assertion : For hydrogenation reactions, the catalytic activity increases from Group $5$ to Group $11$ metals with maximum activity shown by Group $7-9$ elements.

Reason : The reactants are most strongly adsorbed on group $7-9 $ elements.

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Arrange these esters in decreasing order of case of esterfication with $C{H_3}OH/{H^ \oplus }$ :

$(I)$ $\begin{array}{*{20}{c}}
{C{H_3} - CH - COOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,}
\end{array}$

$(II)$ $\begin{array}{*{20}{c}}
{C{H_3} - CH - C{H_2} - COOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

$(III)$ $\begin{array}{*{20}{c}}
\,\,{C{H_3}} \\
{|\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - COOH} \\
{|\,\,\,\,\,\,} \\
\,\,{C{H_3}\,}
\end{array}$

$(IV)$ $(CH_3-CH_2)_3C-COOH$

→

$\begin{array}{*{20}{c}}
{C{H_2} = CHCHC{H_2}C{H_2}OH} \\
|\,\,\,\, \\
{OH\,\,\,}
\end{array}$ $\xrightarrow{{Mn{O_2}}}A.$

$A$ is

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A sample of chloroform being used as anaesthetic is tested by

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$1-2-$ dichloro ethane $+ NaSCH_2 CH_2SNa \to C_4H_8S_2 + (P)$

Unknown product $(P)$ of the above reaction is

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Assertion $A:$ Hydrolysis of an alkyl chloride is a slow reaction but in the presence of $NaI$, the rate of the hydrolysis increases.