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Q153) One mole of phosphide on rating with with excess of water gives.. [ IIT 1999]




SOLUTION

Ca3P2 + 6H2O → 3Ca(OH)2 + 2PH3 ( phosphine)
Answer: (c)


Q154) PH3 n the hydride of phosphate is ..




SOLUTION


Answer: (d)


Q155) Which shows maximum valency? [ CPMT 2003]



SOLUTION

P have maximum valency of 5
Answer:(a)



Q156) Among the trihalides of nitrogen which one is most basic? [ Pb CET 1997]



SOLUTION

Down the group electronegativity decreases hence acidic character decreases
Answer: (c)


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