MCQ
Product $(B)$ in the above reaction is


- A

- ✓

- C

- D








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$C(s) + O_2(g) \to CO_2(g) + x\ kJ$
$CO(g) + \frac {1}{2}O_2(g) \to CO_2(g) + y\,kJ$
The heat of formation of $CO(g)$ is