The reaction that do not take place in the blast furnace during the extraction of iron is-

Incorrect statement(s) among the following options is/are:

 The thermodynamic property useful to select the reducing agent is -

Vapour phase refining process is used for refining :

The incorrect statement(s)among the following is/are:

Consider the Ellingham diagram given below.

The Y-axis, and X-axis in the graph are respectively : 

$$\begin{gathered} 1. \mathrm{Gibbs} \mathrm{energy} (∆{\mathrm{G}}_{\mathrm{r}}^{\mathrm{o}}), \mathrm{and} \mathrm{Pressure} \\ 2. \mathrm{Gibbs} \mathrm{energy} (∆{\mathrm{G}}_{\mathrm{r}}^{\mathrm{o}}), \mathrm{and} \mathrm{temperature} \\ 3. \mathrm{Enthalpy} (∆{\mathrm{H}}_{\mathrm{r}}^{\mathrm{o}}), \mathrm{and} \mathrm{temperature} \\ 4. \mathrm{Temperature,} \mathrm{and} \mathrm{Gibbs} \mathrm{energy} (∆{\mathrm{G}}_{\mathrm{r}}^{\mathrm{o}}) \end{gathered}$$

Consider the following graph.
 

At 1400 ^oC, the $∆{\mathrm{G}}_{\mathrm{r}}^{\mathrm{o}}$ value for the reaction 2FeO + 2C $\to$2Fe + 2CO is -

$$\begin{gathered} 1. -116 \mathrm{kJ} {\mathrm{mol}}^{-1} \\ 2. -106 \mathrm{kJ} {\mathrm{mol}}^{-1} \\ 3. 100 \mathrm{kJ} {\mathrm{mol}}^{-1} \\ 4. -110 \mathrm{kJ} {\mathrm{mol}}^{-1} \end{gathered}$$

Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?

The maximum temperature that can be achieved in blast furnace is :