correct statement regarding molecules SF_4 , CF_4 and XeF_4 are

Statement $II :$ $o-$nitrophenol, $m$-nitrophenol and $p$-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring.

In the light of the above statements, choose the most appropriate answer from the options given below:

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What metals combine with non-metals, the metal atom tends to

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In the reaction sequence :

$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,O} \\
{\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C - H}
\end{array}$ $\mathop {\xrightarrow{{HCN}}}\limits_{\mathop O\limits^\Theta H} (A)\mathop {\xrightarrow{{{H_2}O/{H^ \oplus }}}}\limits_\Delta $ Product

Product will be :

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$1\, L$ aqueous solution of $H _{2} SO _{4}$ contains $0.02\, m$ mol $H _{2} SO _{4} .50\, \%$ of this solution is diluted with deionized water to give $1\, L$ solution $(A).$ In solution $(A)$, $0.01\, m \,mol$ of $H _{2} SO _{4}$ are added. Total $m$ $mols$ of $H _{2} SO _{4}$ in the final solution is $......\times 10^{3}\, m\, mols.$

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Which of the following does not have valence electron in $3d-$ subshell

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Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out in the presence of

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In the isoelectronic species the ionic radii $\overset{o}{\mathop{A}}\,$ of ${N^{3 - }}$, ${O^{2 - }}$ and ${F^ - }$ are respectively given by

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The rate constant for the decomposition of a hydrocarbon is given as

$K = \left( {4.5 \times {{10}^{11}}{S^{ - 1}}} \right){e^{ - \left( {28000\frac{{{K^2}mol}}{J}} \right)\frac{R}{T}}}$