2. Questions Bank
  3. 4th Class
  4. Science
  5. Force, Work and Energy

4th Class Science Force, Work and Energy Question Bank Force, Work and Energy

  • question_answer
    A bottle opener is an example of which simple machine?

    A) Screw               

    B) Lever

    C) Wedge  

    D)        Pulley

    E) None of these

    Correct Answer: B

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