New NABARD Workshop - Last 4 year trend. March 5 at 5 PM. Register here

    Question

    Iron sheet kept in moist air covered with rust. Rust

    is 
    A An element Correct Answer Incorrect Answer
    B A compound Correct Answer Incorrect Answer
    C A mixture of iron and dust Correct Answer Incorrect Answer
    D A mixture of iron, oxygen and water Correct Answer Incorrect Answer

    Solution

    Rust is an iron oxide formed by the redox reaction of iron and oxygen in the presence of water or air moisture 4Fe+2O₂  +x H₂ O → 2Fe₂  O₃ - x H₃ O Hence rust is a compound. 

    Practice Next

    Relevant for Exams: