Out of the given two isomers, for which property is the second greater than the first?

Identify $\mathrm{E}$ in the following sequence of reaction.

$\mathrm{E}\left({\mathrm{C}}_6{\mathrm{H}}_{10}\right)\stackrel{{\mathrm{H}}_2/\mathrm{Ni}}{⟶}\mathrm{F}\left({\mathrm{C}}_6{\mathrm{H}}_{12}\right)\stackrel{{\mathrm{Cl}}_2/\mathrm{h\nu }}{⟶}\mathrm{G}\left({\mathrm{C}}_6{\mathrm{H}}_{11}\mathrm{Cl}\right)$ (only one isomer)

In the following reactions

 the major product $X$ is

The major product formed in the following reaction is: