Question

Match the column (for electrolytic refining of Cu):
$\begin{array}{cccc}& & & \\ & \text{Column-I}& & \text{Column-II}\\ \left(\text{a}\right)& \text{Anode}& \left(\text{p}\right)& \text{Thin sheets of pure Cu}\\ \left(\text{b}\right)& \text{Cathode}& \left(\text{q}\right)& \text{An aqueous solution of copper sulphate containing}{\text{H}}_2{\text{SO}}_4\\ \left(\text{c}\right)& \text{Electrolyte}& \left(\text{r}\right)& \text{Ag, Au}\\ \left(\text{d}\right)& \text{Anode mud}& \left(\text{s}\right)& \text{Impure metal of Cu}\end{array}$

• A. (a) s; (b) p; (c) q; (d) r
• B. (a) p; (b) s; (c) q; (d) r
• C. (a) r; (b) p; (c) q; (d) s
• D. (a) s; (b) r; (c) q; (d) p

Answer 1

The correct option is A

(a) s; (b) p; (c) q; (d) r

$\left(a\right)\to \left(\text{p}\right),\left(\text{q}\right),\left(\text{s}\right);)\text{b}\to (\text{t});(\text{c})\to (\text{q}),(\text{r});(\text{d})\to (\text{r})$
$\{\begin{array}{ccc}\text{Siderite}& \to & {\text{FeCO}}_3\\ \text{Malachite}& \to & {\text{CuCO}}_3.{\text{Cu(OH)}}_2\\ \text{Bauxite}& \to & {\text{Al}}_2{\text{O}}_3.{\text{Cu(OH)}}_2\\ \text{Calamine}& \to & {\text{ZnCO}}_3\\ \text{Argentite}& \to & {\text{Ag}}_2\text{S}\end{array}$