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JEE Main levelOne or more correct optionsDifficulty 2 of 3mt086

Complete heating of which of the following gives as one of the products?

  1. A
  2. B (limonite)
  3. C
  4. D

Answer: A, C, D

Metal carbonates decompose to the oxide and , which covers , and dolomite. Hydrated iron(III) oxide loses only water and contains no carbonate.
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