MCQ
मालाकाइट (Malachite) अयस्क का सूत्र है
- A$\mathrm{Fe}_3 \mathrm{O}_4$
- B$\mathrm{Mn}_3 \mathrm{O}_4$
- CNiAs
- ✓$\mathrm{Cu}(\mathrm{OH})_2 \cdot \mathrm{CuCO}_3$
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