Which of the following is magnetite? (VMIMC 2010) (a) \( \mathrm{Fe}_{2} \mathrm{CO}_{3} \) (b) ...

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Which of the following is magnetite?
(VMIMC 2010)
(a) \( \mathrm{Fe}_{2} \mathrm{CO}_{3} \)
(b) \( \mathrm{Fe}_{2} \mathrm{O}_{3} \)
(c) \( \mathrm{Fe}_{3} \mathrm{O}_{4} \)
(d) \( \mathrm{Fe}_{2} \mathrm{O}_{3} \cdot 3 \mathrm{H}_{2} \mathrm{O} \)
\( P \)
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