MCQ
In kjeldahl’s method, $CuS{O_4}$ acts as
- AOxidising agent
- BReducing agent
- CHydrolysing agent
- ✓Catalytic agent
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$\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\mathop C\limits_7 {H_3} - \mathop C\limits_6 - \mathop C\limits_5 H = \mathop C\limits_4 H - \mathop C\limits_3 H - \mathop C\limits_2 \equiv \mathop C\limits_1 H} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
is in the following sequence
Arrange the following in increasing order of their covalent character.
_x000D_ _x000D_$CaF _{2}$,$CaCl _{2}$,$CaBr _{2}$,$CaI _{2}$
_x000D_ _x000D_Choose the correct answer from the options given below.
${I^ - } + \,ClO_3^- + \,{H_2}S{O_4}\, \to \,C{l^ - }\, + \,HSO_4^ - \, + \,{I_2}$
(no free $H^+$ is present). Select the correct statement in the balanced equation (Coefficients in smallest whole number ratio.)