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
    Rising of mercury in the thermometer is due to:

    A) Contraction of mercury on heating.

    B) Expansion of mercury on heating.

    C) Movement of the patient.

    D) Glass Covering of thermometer.

    E) None of these

    Correct Answer: B

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