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  3. 7th Class
  4. Science

7th Class Science Sample Paper Science Olympiad Model Test Paper-18

  • question_answer
    Which one of the following process involves depositing a layer of zinc on iron for preventing rusting?

    A) Galvanization

    B) Crystallization

    C) Solidification

    D) All of these

    E) None of these

    Correct Answer: A

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