2. Sample Papers
  3. 10th Class
  4. Science

10th Class Science Sample Paper Science Olympiad Model Test Paper-11

  • question_answer
    If iron nails are kept in \[CuS{{O}_{4}}\]solution for two hours the colour of the solution will change to:

    A) Pink

    B) red

    C) Green

    D) yellow

    E) None of these

    Correct Answer: C

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