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AIIMS 2005
Exam
AIIMS
Year
2005
Subject
Chemistry
Chapter
General Principles and Processes of Isolation of Metals

AIIMS 2005 · Chemistry · General Principles and Processes of Isolation of Metals

Which of the following is a carbonate ore?

Which of the following is a carbonate ore?

Options

  1. APyrolusite
  2. BMalachite
  3. CDiaspore
  4. DCassiterite

Correct answer

B. Malachite

Step-by-step solution

Pyrolusite =MnO2=\mathrm{MnO}_2 Malachite −CuCO3⋅Cu(OH)2-\mathrm{CuCO}_3 \cdot \mathrm{Cu}(\mathrm{OH})_2 Diaspore −Al2O3⋅H2O-\mathrm{Al}_2 \mathrm{O}_3 \cdot \mathrm{H}_2 \mathrm{O} Cassiterite - SnO2\mathrm{SnO}_2
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