PH3 can be obtained by the reaction of :

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Ca3P2 with dil. HCI

Ca3P2 with water

white phosphorus with concentrated and hot NaOH (aq)

all of the above

answer is D.

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Detailed Solution

Ca3P2+6HCl→ 3CaCl2+2PH3Ca3P2+6H2O→ 3Ca(OH)2+2PH3P4+3NaOH+3H2O→ PH3+3NaH2PO2

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