2. Sample Papers
  3. 7th Class
  4. Computers Science

7th Class Computers Science Sample Paper Computer Science Olympiad Model Test Paper-3

  • question_answer
    Which technology is used in compact disks?

    A)  Mechanical                  

    B)  Electrical

    C)  Electromagnetic

    D)  Laser

    E)  None of these

    Correct Answer: D

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