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Select the incorrect statement about \( \mathrm{PH}_{3} \) :
(a) It is produced by hydrolysis of \( \mathrm{Ca}_{3} \mathrm{P}_{2} \)
\( \mathrm{P} \)
(b) It gives black ppt. \( \left(\mathrm{Cu}_{3} \mathrm{P}_{2}\right) \) with \( \mathrm{CuSO}_{4} \) solution
\( \mathrm{W} \)
(c) Spontaneously burns in presence of \( \mathrm{P}_{2} \mathrm{H}_{4} \)
(d) It does not react with \( \mathrm{B}_{2} \mathrm{H}_{6} \)
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