Chemistry
Name:
(a) the processes involved in (i) dressing of the ores (ii) refining of the ores.
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen.
Metallurgy
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Answer
(a) The processes involved in:
(i) Dressing of ores are:
- Gravity separation /Hydraulic washing
- Froth floatation
- Magnetic separation
- Chemical method/Leaching
(ii) Refining of ores are:
- Distillation
- Liquation
- Electro refining
(b) sodium oxide and potassium oxide
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Related Questions
Explain the following terms:
(a) ore
(b) gangue
Choose the correct option:
(a) The metal other than aluminum, which has a strong affinity for oxygen is:
(A) Copper
(B) Magnesium
(C) Silver
(D) Gold
(b) A metallic oxide which cannot be reduced by normal reducing agents:
(A) Zinc oxide
(B) Magnesium oxide
(C) Copper (II) oxide
(D) Iron (III) oxide
Give the principles of:
(a) Hydrolytic method
(b) Froth floatation process
(c) Electromagnetic separation
(a) Name the methods by which concentrated ore is converted to metallic oxide
(b) State three objectives achieved during the roasting of ores.