A) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}},\,\,KCl{{O}_{3}}\]
B) \[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}},KCl{{O}_{3}}\]
C) \[Pb{{(N{{O}_{3}})}_{2}},\,AgN{{O}_{3}}\]
D) Both (A) and (C)
Correct Answer: D
Solution :
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\xrightarrow{\Delta }2{{K}_{2}}Cr{{O}_{4}}+C{{r}_{2}}{{O}_{3}}+\frac{3}{2}{{O}_{2}}\] \[2KCl{{O}_{3}}\xrightarrow{\Delta }2KCl\,+3{{O}_{2}}\] \[{{\left( N{{H}_{4}} \right)}_{2}}C{{r}_{2}}{{O}_{7}}\xrightarrow{\Delta }{{N}_{2}}+C{{r}_{2}}{{O}_{3}}+2{{H}_{2}}O\] \[2Pb\,{{\left( N{{O}_{3}} \right)}_{2}}\xrightarrow{\Delta }2PbO+4N{{O}_{2}}+{{O}_{2}}\] \[2AgN{{O}_{3}}\xrightarrow{{{340}^{o}}C}2Ag+2N{{O}_{2}}+{{O}_{2}}\]
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