10th Class Science Sample Paper Science Olympiad Model Test Paper-7

  • question_answer
    Which one of the following chemical equations is balanced?

    A) \[Na+{{O}_{2}}\to N{{a}_{2}}O\]

    B) \[{{H}_{2}}{{O}_{2}}\to {{H}_{2}}O+{{O}_{2}}\]

    C) \[Mg{{(OH)}_{2}}+2HCL\to MgC{{L}_{2}}+2{{H}_{2}}O\]

    D) \[Al{{(OH)}_{3}}\to A{{l}_{2}}{{O}_{3}}+{{H}_{2}}O\]

    E) None of these

    Correct Answer: C


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