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  3. 3rd Class
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3rd Class Science Sample Paper Science Olympiad Model Test Paper-2

  • question_answer
    Ozone layer, which protects us from harmful ultraviolet radiations of the Sun, is present in which region of the following diagram?          

    A) Region 1

    B) Region 2

    C) Region 3

    D) Region 4

    E) Region 5

    Correct Answer: D

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