Which of the following statements is correct?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Chemically rust is hydrated ferric oxide.
The correct statement is:
"Chemically rust is hydrated ferric oxide."
Rust is primarily composed of hydrated iron(III) oxide, which forms when iron reacts with oxygen and moisture. This hydrated form of iron oxide is commonly known as rust. The other statements are incorrect because:
Zinc oxide is not rust; it's a different compound.
Copper does not rust; it forms a patina.
Rust is not non-hydrated; it involves hydration.