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The methods chiefly used for the extraction of lead and tin from their ores are respectively,
- a)carbon reduction and self reduction.
- b)self reduction and electrolytic reduction.
- c)cyanide process and carbon reduction.
- d)none
Correct answer is option 'A'. Can you explain this answer?
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The methods chiefly used for the extraction of lead and tin from their...
Extraction of Lead and Tin from their Ores
Lead Extraction:
The extraction of lead from its ore involves the following steps:
1. Concentration: The ore is first crushed and then washed with water to remove impurities.
2. Roasting: The concentrated ore is then roasted in a furnace to convert it into lead oxide.
3. Self-Reduction: The lead oxide is then reduced to metallic lead by heating it with coke in a blast furnace. This process is known as self-reduction.
4. Refining: The crude lead obtained from the blast furnace is then refined to obtain pure lead.
Tin Extraction:
The extraction of tin from its ore involves the following steps:
1. Concentration: The ore is first crushed and then washed with water to remove impurities.
2. Roasting: The concentrated ore is then roasted in a furnace to convert it into tin oxide.
3. Electrolytic Reduction: The tin oxide is then reduced to metallic tin by electrolysis in a molten salt bath.
4. Refining: The crude tin obtained from electrolysis is then refined to obtain pure tin.
Conclusion:
Hence, the methods chiefly used for the extraction of lead and tin from their ores are self-reduction and electrolytic reduction, respectively.
Lead Extraction:
The extraction of lead from its ore involves the following steps:
1. Concentration: The ore is first crushed and then washed with water to remove impurities.
2. Roasting: The concentrated ore is then roasted in a furnace to convert it into lead oxide.
3. Self-Reduction: The lead oxide is then reduced to metallic lead by heating it with coke in a blast furnace. This process is known as self-reduction.
4. Refining: The crude lead obtained from the blast furnace is then refined to obtain pure lead.
Tin Extraction:
The extraction of tin from its ore involves the following steps:
1. Concentration: The ore is first crushed and then washed with water to remove impurities.
2. Roasting: The concentrated ore is then roasted in a furnace to convert it into tin oxide.
3. Electrolytic Reduction: The tin oxide is then reduced to metallic tin by electrolysis in a molten salt bath.
4. Refining: The crude tin obtained from electrolysis is then refined to obtain pure tin.
Conclusion:
Hence, the methods chiefly used for the extraction of lead and tin from their ores are self-reduction and electrolytic reduction, respectively.
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The methods chiefly used for the extraction of lead and tin from their ores are respectively,a)carbon reduction and self reduction.b)self reduction and electrolytic reduction.c)cyanide process and carbon reduction.d)noneCorrect answer is option 'A'. Can you explain this answer?
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