Formula of Rust is :

CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals

Problem

Formula of Rust is : (1)

\text{Fe}_2\text{O}_3

(2)

\text{FeO} \cdot x\text{H}_2\text{O}

(3)

\text{Fe}_2\text{O}_3 \cdot x\text{H}_2\text{O}

(4)

\text{Fe}_3\text{O}_4 \cdot x\text{H}_2\text{O}