i) ${\mathrm{CH}}_3\mathrm{COONa}\stackrel{\mathrm{NaOH}+\mathrm{CaO}}{\to }\mathrm{X} (\mathrm{major} \mathrm{product})$, ii) ${ }^{\text{'}}{\mathrm{X}}^{\mathrm{\prime }}\underset{ (\mathrm{monochlorination})}{\overset{{\mathrm{Cl}}_2/\mathrm{hv}}{\to }}\mathrm{Y}$

iii) $\mathrm{Y}\underset{\mathrm{Na}}{\overset{\mathrm{Dryether}}{\to }}\mathrm{Z}$, ‘Z’ can be obtained at the anode as a major product during Kolbe’s electrolysis by using