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NEET Sample Paper NEET Sample Test Paper-13

  • question_answer
    Oxidation no. of P in \[{{H}_{4}}{{P}_{2}}{{O}_{5}},\text{ }{{H}_{4}}{{P}_{2}}{{O}_{6}},\]and \[{{H}_{4}}{{P}_{2}}{{O}_{7}}\]are respectively

    A)  +3, +4, +5    

    B)  +4, +3, +5

    C)  +3, +5, +4                 

    D)  +5, +3, +4

    Correct Answer: A

    Solution :

     \[{{H}_{4}}{{P}_{2}}{{O}_{5}}:4\times 1+2\times a-5\times 2=0\] \[a=+\,3\] \[{{H}_{4}}{{P}_{2}}{{O}_{6}}:4\times 1+2\times a-6\times 2=0\] \[a=+\,4\] \[{{H}_{4}}{{P}_{2}}{{O}_{7}}:4\times 1+2\times a-7\times 2=0\] \[a=+\,5\]


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