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.

Options

A. TFTT
B. FFTT
C. TTTF
D. TFTF

Answer

A

Explanation

`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`