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  3. 6th Class
  4. Science
  5. The Living Organisms and their Surrounding

6th Class Science The Living Organisms and their Surrounding Question Bank Environment

  • question_answer
    Temporary hardness of water is caused due to:

    A) Presence of magnesium in water.

    B) Presence of calcium bicarbonate in water.

    C) Both [a] and [b]

    D) Either [a] or [b]

    E) None of these

    Correct Answer: C

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