Rust is 1. hydrated iron oxide 2. hydrated copper sulphate 3. anhydrous iron oxide 4. none of the above

Rust is 1. hydrated iron oxide 2. hydrated copper sulphate 3. anhydrou

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1.	Rust is 1. hydrated iron oxide 2. hydrated copper sulphate 3. anhydrous iron oxide 4. none of the above
Answer» 1. hydrated iron oxide