(C) Key Idea: Corundum is not a mineral of iron. It is a crystalline form of aluminium oxide $(Al_2O_3)$ typically containing traces of $Fe$,$Ti$,$V$,

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(C) Key Idea: Corundum is not a mineral of iron. It is a crystalline form of aluminium oxide $(Al_2O_3)$ typically containing traces of $Fe$,$Ti$,$V$,and $Cr$. Limonite,magnetite,and haematite are common minerals of iron. The molecular formulas of the given minerals are provided below:NameFormulaLimonite$Fe(OH)_3 \cdot nH_2O$Magnetite$Fe_3O_4$Corundum$Al_2O_3$Haematite$Fe_2O_3$

Class 12 Chemistry General Principles and Processes of Isolation of Elements Occurrence

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Which of the following is not a mineral of iron?

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A
Limonite
B
Magnetite
C
Corundum
D
Haematite

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General Principles and Processes of Isolation of Elements

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Occurrence

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Match List-$I$ and List-$II$ :

List-$I$ List-$II$

$(a).$ Haematite $(i).$ $Al_{2}O_{3} \cdot xH_{2}O$

$(b).$ Bauxite $(ii).$ $Fe_{2}O_{3}$

$(c).$ Magnetite $(iii).$ $CuCO_{3} \cdot Cu(OH)_{2}$

$(d).$ Malachite $(iv).$ $Fe_{3}O_{4}$

Choose the correct answer from the options given below :

List-$I$	List-$II$
$(a).$ Haematite	$(i).$ $Al_{2}O_{3} \cdot xH_{2}O$
$(b).$ Bauxite	$(ii).$ $Fe_{2}O_{3}$
$(c).$ Magnetite	$(iii).$ $CuCO_{3} \cdot Cu(OH)_{2}$
$(d).$ Malachite	$(iv).$ $Fe_{3}O_{4}$