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

4th Class Science Sample Paper Science Olympiad Model Test Paper-11

  • question_answer
    Which layer of soil is rich in humus?

    A) A-Horizon                     

    B) B-Horizon

    C) C-Horizon                     

    D) D-Horizon

    E) None of these

    Correct Answer: A

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