2. Sample Papers
  3. 10th Class
  4. General Knowledge

10th Class General Knowledge Sample Paper General Knowledge Sample Test Paper-9

  • question_answer
    The majority of the ozone (about 97%) found in the atmosphere is concentrated in the stratosphere at an altitude of ______.

    A)  15 to 55 kilometres above the Earth's surface

    B)  15 to 50 kilometres above the Earth's surface

    C)  20 to 30 kilometres above the Earth's surface

    D)  20 to 50 kilometres above the Earth's surface

    E)  None of these

    Correct Answer: A

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