Statement I: Silicon is preferred over germanium for making semiconductor devices.
Statement II: The energy gap for germanium is more than the energy gap of silicon.
The energy gap for germanium is less (0.72 eV) than the energy gap of silicon ( 1.1 eV). Silicon is preferred over germanium for making semiconductor devices because they are abundantly available in nature, do not get easily damaged by heat and cut off current is very low.