1.

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»

(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



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