Chemistry - Complete Pblock- Question with Solution | TestHub

$\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\stackrel{\Delta }{⟶}\mathrm{PbO}+2{\mathrm{NO}}_2$

${\mathrm{N}}_2$ gas is constituent of air and it produces ammonia gas (basic nature) after reacting with ${\mathrm{H}}_2$ gas.

${\mathrm{NH}}_4{\mathrm{NO}}_2, ({\mathrm{NH}}_4{)}_2{\mathrm{Cr}}_2{\mathrm{O}}_7 \mathrm{and} {\mathrm{NaN}}_3$give nitrogen gas on heating but lead nitrate doesn't give nitrogen gas so it will be answer.

${\mathrm{NH}}_4{\mathrm{NO}}_2\stackrel{\Delta }{⟶}{\mathrm{N}}_2+2{\mathrm{H}}_2\mathrm{O}$

${\left({\mathrm{NH}}_4\right)}_2{\mathrm{Cr}}_2{\mathrm{O}}_7\stackrel{\Delta }{⟶}{\mathrm{N}}_2+{\mathrm{Cr}}_2{\mathrm{O}}_3+{\mathrm{H}}_2\mathrm{O}$

${\mathrm{NaN}}_3\stackrel{300°\mathrm{C}}{⟶}3{\mathrm{N}}_2+2\mathrm{Na}$