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Question

Phosphine, acetylene and ammonia can be formed by treating water with :
  1. Ca3P2,CaC2,Mg3N2
  2. Ca3P2,CaC2,CaCN2
  3. Ca3P2,Mg2C,NH4NO3
  4. Mg3P2,Al4C3,Li3N

A
Mg3P2,Al4C3,Li3N
B
Ca3P2,CaC2,CaCN2
C
Ca3P2,Mg2C,NH4NO3
D
Ca3P2,CaC2,Mg3N2
Solution
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Phosphine acetylene and ammonia can be formed by treating water with Ca3P2,CaC2,Mg3N2
Ca3P2+6H2O3Ca(OH)2+2PH3 (Phosphine)
CaC2(s)+2H2O(l)Ca(OH)2(s)+C2H2(g) (Acetylene)
Mg3N2+6H2O3Mg(OH)2+2NH3 (Ammonia)
Hence option B is correct.

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