• # question_answer Chlorine is liberated, when we heat [AFMC 1998] A) $KMn{{O}_{4}}+NaCl$ B) ${{K}_{2}}C{{r}_{2}}{{O}_{7}}+Mn{{O}_{2}}$ C) $P{{b}_{2}}{{(N{{O}_{3}})}_{4}}+Mn{{O}_{2}}$ D) ${{K}_{2}}C{{r}_{2}}{{O}_{7}}+HCl$

${{K}_{2}}C{{r}_{2}}{{O}_{7}}+14HCl\,\,\to \,\,2KCl+2CrC{{l}_{3}}$$+7{{H}_{2}}O+3C{{l}_{2}}$