NEET Sample Paper NEET Sample Test Paper-19

  • question_answer 61) Oleum is a mixture of

    A) \[{{H}_{2}}{{S}_{2}}{{O}_{3}}+S{{O}_{2}}\]          

    B) \[{{H}_{2}}S{{O}_{4}}+S{{O}_{3}}\]

    C) \[{{H}_{2}}S{{O}_{4}}+S{{O}_{2}}\]  

    D) \[{{H}_{2}}S{{O}_{4}}+S{{O}_{3}}\]   

    Correct Answer: B

    Solution :

    \[{{H}_{2}}{{S}_{2}}{{O}_{7}}\]is oleum. It is formed by dissolving \[S{{O}_{3}}\]in\[{{H}_{2}}S{{O}_{4}}\]which upon dilution gives two molecules of \[{{H}_{2}}S{{O}_{4}}.\] Hence the correct option is [b].

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