• # question_answer In the following reaction $4P+3KOH+3{{H}_{2}}O\to 3K{{H}_{2}}P{{O}_{2}}+P{{H}_{3}}$ A) phosphorus is both oxidised and reduced. B) only phosphorus is reduced. C) phosphorus is not oxidized D) none of these

$4P\,+3KOH\,+3{{H}_{2}}O\,\,\to K{{H}_{2}}P{{O}_{2}}+P{{H}_{3}}$ $\operatorname{O}.N\,\,of\,\,P=0$ in $K{{H}_{2}}P{{O}_{2}}$ it is +1, in $P{{H}_{3}}$ it is -3. Hence P is oxidised and reduced.