Question

Match the items in Column 1 with items in Column 2.

$\begin{array}{cc}\text{Column 1}& \text{Column 2}\\ \text{i) Anode-mud}& \text{a) protects objects from corrosion}\\ \text{ii) Electroplating}& \text{b) purification of metals}\\ \text{iii) Electrorefining}& \text{c) Au, Ag, Pt}\end{array}$

• A. i$\to$c, ii$\to$a, iii$\to$b
• B. i$\to$a, ii$\to$c, iii$\to$b
• C. i$\to$b, ii$\to$a, iii$\to$c
• D. i$\to$a, ii$\to$b, iii$\to$c

Answer 1

The correct option is A

i$\to$c, ii$\to$a, iii$\to$b

Anode-mud is the impurities collected during electrorefining of copper. It contains Au, Ag, Pt.

Electroplating is done to objects to prevent it from corrosion.

Electrorefining is the process of purification of metals.