2. Questions Bank
  3. 7th Class
  4. Science
  5. Physical and Chemical Changes

7th Class Science Physical and Chemical Changes Question Bank Physical and Chemical Changes

  • question_answer
    ___ is known as blue vitriol.

    A) Potassium sulphate        

    B) Iron sulphate

    C) Crystals of copper sulphate      

    D) Copper hydroxide

    E) None of these

    Correct Answer: C

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