Select the correct statement:

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(C) $1$. Magnetite is $Fe_3O_4$,which is an oxide ore of iron,not manganese.$2$. Pyrolusite is $MnO_2$,which is an oxide ore of manganese,not lead.$3$

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Siderite is carbonate ore of iron

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(C) $1$. Magnetite is $Fe_3O_4$,which is an oxide ore of iron,not manganese.$2$. Pyrolusite is $MnO_2$,which is an oxide ore of manganese,not lead.$3$. Siderite is $FeCO_3$,which is a carbonate ore of iron. This is a correct statement.$4$. $FeS_2$ is known as iron pyrites or fool's gold,not rolled gold. Rolled gold is an alloy of copper and aluminium.

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