JEE Previous Year Question
Extraction of metal from the ore cassiterite involves
Topic: JEE PYQ
Answer: A, D. Full step-by-step solution below.
- Acarbon reduction of an oxide ore
- Bself-reduction of a sulphide ore
- Cremoval of copper impurity
- Dremoval of iron impurity
Correct answer: A, D
Solution
(a,d)Important ore of tin is cassiterite (). is reduced to metal using carbon at 1200 – 1300°C in an electric furnace. The product often contains traces of Fe, which is removed by blowing air through the molten mixture to oxidise FeO which then floats to the surface.+ 2C → Sn + 2CO
Fe + → FeO
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