The forbidden gap in germanium crystal is

The energy difference between the valance and conduction band is called Forbidden energy gap.
The forbidden gap in germanium crystal is 0.7eV.

In case of germanium crystal,

$$\begin{gathered} E_g=0.7eV \\ =0.7\times 1.6\times {10}^{-19}J \\ =1.12\times {10}^{-19}J \end{gathered}$$

Hence the correct answer is both 1 and 2.