jahri salaah

Q: In the Hanafi Mazhab, is it permissible for the Imaam to recite qunoot-e-naazilah in all jahri Salaah or is it only permissible for him to recite it in Fajr Salaah?

Q: If the Imaam prays Surah Fatiha silently in jahri salaat, would sajda-e-sahw be wajib? If only two verses or three verses are recited what will be the Hukm?