1. When you refer to an unknown object in Russian, do you use 'oн', 'oна' or 'oнo'? I mean, when you don't know the gender of the noun because the noun is unknown. Like, 'What is it?' Or, 'I think it is...' (etc).

2. My book did not cover this next thing properly. When saying 'its', do you use 'егo' for all forms - masc, fem, neut? Or is 'егo' just for the masculine & neuter 'it' (and 'him'), while 'её' is for the feminine 'it' (and 'her')?