1.

Consider the following statements and arrange in the order of true/false as given in the codes. S_1:Ammonia on heating with concentrated solution of sodium hypochlorite gives nitrogen gas. S_2:The phosphine gas dissolves in water in presence of sunlight and produces phosphonium hydroxide like ammonium hydroxide. S_3:Barium azide on heating gives pure nitrogen gas. S_4:The oxo-acids of phosphorus in which phosphorus has lower oxidation state less than +5 contain either P-P or P-H bonds but not both in addition to P=O and P-OH bonds.

Answer»

TFTT
FFTT
TTTF
TFTF

Solution :`S_1-N_2H_4` is formed in aqueous DILUTE solution in presence of GLUE and gelatin and in concentrated solution yields `N_2`
`S_2-PH_3` solution in WATER EXPLODES forming red phosphrous and `H_2`
`S_3-Ba(N_3)_2overset(DELTA)toBa+3N_2 uarr`


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