question_answer

in the above reaction sequence, the species A, B and C are, respectively,

A) A -\[L{{i}_{2}}C{{O}_{3}}\]                   B - \[L{{i}_{2}}O\]              C - \[{{O}_{2}}\]

B) A -\[N{{a}_{2}}S{{O}_{3}}\]                  B - \[N{{a}_{2}}{{O}_{2}}\]          C - \[S{{O}_{2}}\]

C) A -\[Ba{{C}_{2}}{{O}_{4}}\]                  B - \[BaO\]                    C - \[C{{O}_{2}}\]

D) A -\[Ca{{C}_{2}}{{O}_{4}}\]                  B - \[CaO\]                   C - \[CO\]

Correct Answer: D

Solution :

[d]