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Chemistry · May / June 2018 · Paper 11 · Question 15

5070Extraction of metals

The diagram shows apparatus that can be used to extract aluminium from its ore. What are J, K and L?

  1. AJ: negative electrode, K: aluminium oxide + cryolite, L: aluminium
  2. BJ: negative electrode, K: cryolite, L: aluminium oxide
  3. CJ: positive electrode, K: aluminium oxide, L: cryolite
  4. DJ: positive electrode, K: aluminium oxide + cryolite, L: aluminium

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Correct answer: D. J: positive electrode, K: aluminium oxide + cryolite, L: aluminium

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