7th Class Science Sample Paper Science Sample Paper-5

  • question_answer
    Which of the following is an example of decomposition reaction?

    A) \[C+{{O}_{2}}\,\,\,\,\,C{{O}_{2}}\]

    B) \[2Mg+{{O}_{2}}\,\,\,\,\,2MgO\]

    C) \[2NaHC{{O}_{3}}\,\,\,\,\,N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O+C{{O}_{2}}\] 

    D) All of these

    E) None of these

    Correct Answer: C


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