Specifying a certain amount of the profits for any partner in a partnership

Q: I invested 1 million dollars with my friend who is running a chicken business. Normally, what happens is that I invest my money and we specify that 200,000 from the profits will be mine and the rest will be his. Is this permissible or is this interest? Please also explain the basic laws of a partnership in Islam. 

Sin for not wearing niqaab

Q: I am a female and I wear abaya and scarf but not the niqaab (face veil). I am trying my best to cover my body properly and have heard that the face veil is waajib, however, my question is, do I get sin if I do not wear the niqaab? I do however wear the appropriate attire besides covering my face.