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  3. 8th Class
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8th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Which one of the following statements is correct?

    A) All bacteria cause diseases.

    B) All bacteria are useful to us.

    C) All bacteria are unicellular.

    D) All bacteria can turn alcohol into acetic acid.

    E) None of these

    Correct Answer: C

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