ΔG° versus T plot the Ellingham’s diagram slopes downward for the reaction

Question

Accepted Answer

$	ext{C} + \frac{1}{2}	ext{O}_2 ightarrow 	ext{CO}$

Answer

$	ext{CO} + \frac{1}{2}	ext{O}_2 ightarrow 	ext{CO}_2$

Answer

$2	ext{Ag} + \frac{1}{2}	ext{O}_2 ightarrow 	ext{Ag}_2	ext{O}$

Answer

$	ext{Mg} + \frac{1}{2}	ext{O}_2 ightarrow 	ext{MgO}$

AIIMS 2015 Chemistry Ellingham Diagrams MCQ Question