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Question

Which of the following metals are available in the free state in nature?

A
Iron
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B
Sodium
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C
Gold
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D
Zinc
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Solution

The correct option is C Gold
Gold is less reactive in normal conditions with air, water and other chemicals and as a result is more likely to be found in the free state in nature. Other metals like iron, sodium and zinc are much more reactive than gold. Hence, they are not available in free state. They are usually present in earth's crust as oxides, sulphides or carbonates.

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