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UPSC Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Chemistry, Matter and its Composition

  • question_answer
          Iron sheet kept in moist air covered with rust. Rust is                       [CDS]

    A) an element

    B) a compound

    C) a mixture of iron and dust

    D) a mixture of iron, oxygen and water

    Correct Answer: B

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