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Q.
Which of the following gives $PH_{3}$ on treatment with water?
NTA AbhyasNTA Abhyas 2022
Solution:
All phosphides on treatment with water forms $PH _{3}$.
$
\begin{array}{l}
Ca _{3} P _{2}+6 HOH \rightarrow 2 PH _{3}+3 Ca ( OH )_{2} \\
Na _{3} P +3 HOH \rightarrow PH _{3}+3 NaOH \\
AlP +3 HOH \rightarrow PH _{3}+ Al ( OH )_{3}
\end{array}
$