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9th Class Science Is Matter Around Us Pure Question Bank MCQs - Is Matter Around us Pure

  • question_answer
    Tincture of iodine has antiseptic properties. This solution is made by dissolving (NCERT Exemplar)

    A) iodine in potassium iodide

    B) iodine in Vaseline

    C) iodine in water

    D) iodine in alcohol

    Correct Answer: D

    Solution :

    [d] Tincture of iodine is made by dissolving iodine in alcohol. It is usually 2-7% elemental iodine, along with potassium iodide or sodium iodide, in a mixture of alcohol (ethanol) and water.


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