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
    Effervescence is:

    A) Burning of paper

    B) Melting of ice

    C) Bubbling in liquid

    D)        Freezing of water

    E) None of these

    Correct Answer: C

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