Question

An iron nail is kept in copper
sulphate solution. The iron is covered
by brownish substance which is​

Answer 1

Answer:

Cu

Explanation:

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Answer 2

Answer:

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Explanation:

rusting

When a piece of iron is left out in the open for a while, a film of brownish substance gets deposited on its surface called rust. Rusting occurs when iron is exposed to oxygen in air and water or water vapor. Rust is Iron oxide.