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➡ Name the alloy of copper and aluminium. Write is one use..?

➡Why does aluminium occur in free state..?

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Answer 1

1) Duralumin
* it is widely used in Aircraft construction.
2) aluminium does not occur in free state because it is very reactive metal as it is fifth in reactivity series.

Answer 2

Hello sister ,

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=> aluminium bronze is an alloy of aluminium and copper

it is used to make many machine parts and tools because it resist corrostion

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among all the other metals it is seen that aluminium occurs in free state this is because :-

# it is more reactive as compared to other metals

# they react with oxygen to form protective layer and this layer does not react with other elements that's why aluminum occurs in free state

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