Identify incorrect statement from the following.
 

Magnitude of H-H bond length is equal to D-D bond length

 ${\mathrm{CH}}_4\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)\frac{\mathrm{Ni}}{1273\mathrm{K}}\mathrm{CO}\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)$ is water gas shift reaction

Zinc can liberate hydrogen gas when it reacts with sodium hydroxide

Pure hydrogen can be obtained by the electrolysis of $Ba{\left(OH\right)}_2$  solution using Nickel electrodes.