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Directions: The question has four choices, out of which ONE or MORE may be correct.
Extraction of metal from the ore cassiterite involves
  • a)
    carbon reduction of an oxide ore
  • b)
    self-reduction of a sulphide ore
  • c)
    removal of copper impurity
  • d)
    removal of iron impurity
Correct answer is option 'A,C,D'. Can you explain this answer?
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Directions: The question has four choices, out of which ONE or MORE m...
Tin is obtained by reducing the ore cassiterite with coal in a reverberatory furnace. Limestone is added to produce a slag with the impurities, which can be separated.
SnO2 + 2C → Sn + 2CO
Crude tin so obtained is contaminated with iron, copper, lead and other metals. It is, therefore, remelted on an inclined furnace. The process is called liquation.
The easily fusible tin melts away and the less fusible impurities are left behind. Molten tin is finally stirred with green poles of wood in contact with air. In this process, any remaining metal impurities are oxidised forming a scum, which rises to the surface and is removed. This process is called poling.
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Directions: The question has four choices, out of which ONE or MORE may be correct.Extraction of metal from the ore cassiterite involvesa)carbon reduction of an oxide oreb)self-reduction of a sulphide orec)removal of copper impurityd)removal of iron impurityCorrect answer is option 'A,C,D'. Can you explain this answer?
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Directions: The question has four choices, out of which ONE or MORE may be correct.Extraction of metal from the ore cassiterite involvesa)carbon reduction of an oxide oreb)self-reduction of a sulphide orec)removal of copper impurityd)removal of iron impurityCorrect answer is option 'A,C,D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Directions: The question has four choices, out of which ONE or MORE may be correct.Extraction of metal from the ore cassiterite involvesa)carbon reduction of an oxide oreb)self-reduction of a sulphide orec)removal of copper impurityd)removal of iron impurityCorrect answer is option 'A,C,D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: The question has four choices, out of which ONE or MORE may be correct.Extraction of metal from the ore cassiterite involvesa)carbon reduction of an oxide oreb)self-reduction of a sulphide orec)removal of copper impurityd)removal of iron impurityCorrect answer is option 'A,C,D'. Can you explain this answer?.
Solutions for Directions: The question has four choices, out of which ONE or MORE may be correct.Extraction of metal from the ore cassiterite involvesa)carbon reduction of an oxide oreb)self-reduction of a sulphide orec)removal of copper impurityd)removal of iron impurityCorrect answer is option 'A,C,D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
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