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10th Class Science Metals and Non-metals / धातु और अधातु Question Bank Metals and Non-metals

  • question_answer
    When cinnabar (an ore of mercury) is heated in the presence of oxygen, the gas evolved is:

    A) \[{{O}_{2}}\]                           

    B) \[S{{O}_{2}}\]

    C) \[S{{O}_{3}}\]                         

    D) \[C{{O}_{2}}\]

    E) None of these

    Correct Answer: B

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