JEE Advanced Model Paper 18 with solutions for online practice

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Question : 21 of 60

Marks: +1, -0

Phosphine gas is not prepared by

Ca3P2 + dil . HCl
PH4I + KOH soln
Red phosphorus + NaOH soln
Δ
→
P4 + NaOH soln
Δ
→

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