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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2005

  • question_answer
    The oxidation number of sulphur in\[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] is:

    A) \[+1\]                                   

    B) \[+2\]

    C) \[+3\]                   

    D)        \[-3\]

    Correct Answer: B

    Solution :

    Suppose the oxidation number of sulphur in\[N{{a}_{2}}S{{O}_{3}}\] is\[x\]. \[\therefore \]  \[2(+1)+x+3(-2)=0\]                 \[2+2x-6=0\]                 \[2x-4=0\] \[\therefore \]  \[x=\frac{4}{2}=+2\]


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