Consider the following.
Statement-I : Gold sol is prepared by Bredig's arc method.
Statement-II : Bredig's arc method involves only dispersion but not condensation.
The correct answer is
$$ \text { Which of the following sets are correctly matched? } $$
$$ \begin{array}{cll} \hline & \text { Metal } & \text { Refining Process } \\ \hline \text { I. } & \mathrm{Hg} & \text { Distillation } \\ \hline \text { II. } & \mathrm{Cu} & \text { Poling } \\ \hline \text { III. } & \mathrm{B} & \text { Zone refining } \\ \hline \text { IV. } & \mathrm{Ti} & \text { Liquation } \\ \hline \end{array} $$
The oxides of nitrogen obtained by the reaction of nitric acid with (i) $\mathrm{P}_4 \mathrm{O}_{10'}$ (ii) $\mathrm{P}_4$ respectively are
$$ \text { Match the following } $$
| $$ \text { List-I (Aquated ion) } $$ |
$$ \text { List-II (Colour) } $$ |
||
|---|---|---|---|
| (A) | $\mathrm{Ni}^{2+}$ | (I) | Violet |
| (B) | $\mathrm{Fe}^{3+}$ | (II) | Blue |
| (C) | $\mathrm{Mn}^{3+}$ | (III) | Yellow |
| (D) | $\mathrm{V}^{4+}$ | (IV) | Red |
| (V) | Green | ||
Correct answer is
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