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AP EAMCET201920 Apr 2019Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

Which of the following are carbonate ores? I. Magnetite II. Kaolinite III. Siderite IV. Calamine

Options

  1. AI, II, III
  2. BII, III, IV
  3. CI, II only
  4. DIII, IV only

Correct answer

D. III, IV only

Step-by-step solution

(I) Magnetite ( Fe ₃ O ₄ ) (II) Kaolinite ( Al ₂ Si ₂ O ₅( OH )₄ ) (III) Siderite ( FeCO ₃ ) (IV) Calamine ( ZnCO ₃ ) (III), (IV) both are carbonate ores. Thus, option (4) is correct.

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