In how many of the following reactions `N_(2)` gas may be released
`{:((a) NH_(4)NO_(2) overset(Delta)rarr,(b) (NH_(4))_(2) Cr_(2)O_(7) overset(Delta)rarr,(c) NH_(2)CONH_(2) + HNO_(2) overset(Delta)rarr),((d) NH_(2)CONH_(2) + NaOBr rarr,(e) NH_(3) + Cl_(2) (LR) rarr,(f) NH_(3) + Br_(2) (LR) rarr),((g) NH_(3) + NaOCl rarr,(h) NH_(3) + CaOCl_(2) rarr,(i) Ba(N_(3))_(2) overset(Delta) rarr):}`

Answer

9(a,b,c,d,e,f,g,h and i)