During reduction of `ZnO` to `Zn, C` is more efficient than `CO`.
The standard free energy of formation of `CO_(2)` from `CO` is always higher than that of `ZnO`.

Assertion : During the reduction of ZnO to Zn,C is more efficient than CO. Reason : The standard free energy of formation of CO_2 from CO is always higher than that of ZnO.

CO is more toxic than CO_(2) because it :

CO is more toxic than CO_(2) because it :

CO is more toxic than CO_(2) because it :

CO is more toxic than CO_(2) because it :

Solubility of CO_(2) is ________ times higher than that of O_(2)