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(a) Name two metals which are found in nature mainly in the free state (as metallic elements).

(b) Name two metals which are always found in combined state.

(c) What iron compound is present in haematite ore? Also write its chemical formula.

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(a) Gold and Platinum are found in nature mainly in the free state.

(b) Sodium and Magnesium are always found in combined state.

(c) Iron (III) oxide; Fe2O3  is present in haematite ore.

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