geniza

Question

what is asur to throw out and needs to be placed in a geniza? a)dvar tora in english b)something containing the letter 'heh' for hashem? c)things containing elohenu d)thinkgs written with elokenu or daleds instead of hehs e)I was told that God is a proper name for god and needs a dash like so g-d. That seems pretty silly to me. is there any validity to it? seperate question- Can one do netilat yadayim and say the beracha in a clean bathroom since there is no excrement within 4 amot and has all been flushed away, and does not smell, or is it asur because the room is designated for toilet use. what if there is a seperate sink area from toilet area but not completely closed off? thanks