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Doctors Medicines MCQs Q&A

  1. Carbon dioxide dissolves in water
  2. Oxygen dissolves in water
  3. Salt dissolves in water
  4. None of the above
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Option 3 : Salt dissolves in water

Physical change involves any process involving a substance’s change from one state to another without any alteration of its chemical properties.  They are also called reversible changes. As against this, a chemical change brings about a change in the chemical composition of the substance and is thus irreversible.
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