10th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Which one of the following statements is incorrect?

    A) Carbon is a tetravalent element.

    B) Carbon does not occur in nature in Free State.

    C) Diamond is an allotrope of carbon.

    D)  Carbon atoms have the property of forming long chains by self-combination.

    E)  None of these

    Correct Answer: B


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