Question

Name:

(a) the processes involved in

(i) concentration (ii) refining of ores.

(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen.

Answer 1

(a) The processes involved in

(i) Processes involved in concentration are:

1. Hydrolytic method
2. Magnetic Separation
3. Froth floatation
4. Leaching

(ii) Processes involved in Refining of ores are:

1. Distillation
2. Liquation
3. Oxidation
4. Electro- refining

(b) Potassium and sodium oxides cannot be reduced by carbon, carbon monoxide and hydrogen.