• # question_answer Nitrogen is liberated by the thermal decomposition of only [IIT 1991] A) $N{{H}_{4}}N{{O}_{2}}$ B) $Na{{N}_{3}}$ C) ${{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}$ D) All the three

$N{{H}_{4}}N{{O}_{2}}\,\to \,{{N}_{2}}+2{{H}_{2}}O$ $2Na{{N}_{3}}\,\to \,2Na+3{{N}_{2}}$ ${{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\,\to \,{{N}_{2}}+C{{r}_{2}}{{O}_{3}}+4{{H}_{2}}O$