At the temperature corresponding to which of the points in Fig. `FeO` will be reduced to Fe by coupling the reaction `2Fe rarr 2Fe +O_(2)` with all of the following reactions?
(a) `C + O_(2) rarr CO_(2)` (b) `2C +O_(2) rarr 2CO` and (c) `2CO +O_(2) rarr 2CO_(2)`

Options

A. Point A
B. Point B
C. Point D
D. Point E

Answer

B, D

Explanation

(b,d) Below point B and E, FeO will be reduced to Fe by all the three reactions shown above in the question.` DeltaG_((C","CO_(2)))^(@),DeltaG_((CO","CO_(2)))^(@), DeltaF_((CO","CO_(2)))^(@)` lie below `DeltafG_((Fe","FeO))^(@)` Curve at point B and E. Therefore ,FeO will be reduced by all three reactions.
Hence , option (b) and (d) are correct choice.