A) oxidation
B) reduction
C) disproportionation
D) none of these
Correct Answer: C
Solution :
\[{{\overset{0}{\mathop{P}}\,}_{4}}+3NaOH+3{{H}_{2}}O\to \overset{-3}{\mathop{P}}\,{{H}_{3}}+3Na{{H}_{2}}\overset{+1}{\mathop{P}}\,{{O}_{2}}\] Oxidation number of P changes from zero to\[-3\] in\[P{{H}_{3}}\]and +1 in\[Na{{H}_{2}}P{{O}_{2}}\]. Therefore, it is an example of disproportionation reaction.
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