Q75 / 180 · AIIMS 2005 · Chemistry

Which of the following is a carbonate ore?

  • A
    Pyrolusite
  • Correct answer
    B
    Malachite
  • C
    Diaspore
  • D
    Cassiterite

Solution

Pyrolusite $=\mathrm{MnO}_2$ Malachite $-\mathrm{CuCO}_3 \cdot \mathrm{Cu}(\mathrm{OH})_2$ Diaspore $-\mathrm{Al}_2 \mathrm{O}_3 \cdot \mathrm{H}_2 \mathrm{O}$ Cassiterite - $\mathrm{SnO}_2$

Hence, the correct answer is option: 'B'.

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