Statement-1: ${\mathrm{NH}}_2-{\mathrm{NH}}_2$ gives prussian blue colour during Lassaigne test (element detection test). 

Statement-2: NaCN gives prussian blue colour of ${\mathrm{Fe}}_4{\left[\mathrm{Fe}\left({\mathrm{CN}}_6\right)\right]}_3$ with ${\mathrm{FeSO}}_4,{\mathrm{FeCl}}_3$. 

Statement-1 is False, Statement-2 is True.

Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Statement-1 is True, Statement-2 is False.

Statement-1 is True, Statement-2 is True, Statement-2
is NOT a correct explanation for Statement-1.