A) phosphorus is both oxidised and reduced.
B) only phosphorus is reduced.
C) phosphorus is not oxidized
D) None of these
Correct Answer: A
Solution :
[a] \[4P+3KOH+3{{H}_{2}}O\to 3K{{H}_{2}}P{{O}_{2}}+P{{H}_{3}}\]O.N of\[P=0\], In \[K{{H}_{2}}P{{O}_{2}}\] it is + 1, In \[P{{H}_{3}}\]it is \[-3\] . Hence P is oxidised and reduced.
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