7th Class Science Sample Paper Science Sample Paper-2

  • question_answer
    What is the correct chemical formula for magnesium oxide?

    A) \[M{{g}_{3}}{{O}_{2}}\]        

    B) \[M{{g}_{2}}{{O}_{3}}\]

    C) \[M{{g}_{2}}O\]          

    D) \[MgO\]

    E) None of these

    Correct Answer: D


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