Question

Match the following metal ores with their suitable method of concentration of ores.​

Column A	Column B
(a) Copper glance	(i) Froth floatation
(b) Bauxite	(ii) Magnetic separation
(c) Siderite	(iii) Leaching

• A. a: i; b: iii; c: ii
• B. a: ii; b: iii; c: i​
• C. a: iii; b: ii; c: i​
• D. a: i; b: ii; c: iii​

Answer 1

The correct option is A a: i; b: iii; c: ii

Since copper glance is a sulphur containing ore of copper so the suitable method for its concentration will be Froth flotation.
So, (a) will be matched with (i).

Bauxite is an ore of aluminium. Concentration of bauxite is carried out by Leaching.The ore is dissolved in NaOH solution and (${Al}_2{O}_3$) is extracted out as sodium aluminate.
So, (b) will be matched with (iii).

Siderite is an iron ore and it can be separated from the non- magnetic gangue particles by magnetic separation.
So, (c) will be matched with (ii).

The correct answer is option (c).