The structure of H_2 O_2 is

$(I)$ $\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C{H_2} - O - S - C{F_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}
\end{array}$

$(II)$ $CH_3-CH_2-O-TsCl$

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

$(IV)$ $\begin{array}{*{20}{c}}
{C{H_3} - CH - OH} \\
| \\
{{C_6}{H_5}}
\end{array}$

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Resistance of a decimolar solution between two electrodes $0.02$ $meter$ apart and $0.0004\,m^2$ in area was found to be $50\,ohm$. Specific conductance $(k)$ is : ........... $\mathrm{S\,m}^{-1}$

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Solid $CuSO_4·5H_2O$ having covalent, ionic as well as co-ordinate bonds. Copper atom/ion forms ................. co-ordinate bonds with water.

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Formic acid is a weak acid and hydrochloric acid is a strong acid. It follow that the

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When $100 \,ml$ of $1\,M$ $NaOH$ solution is mixed with $ 10 \,ml$ of $10\, M$ ${H_2}S{O_4},$ the resulting mixture will be

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