Nikaah & Marriage Issues

Q: If a man has two wives. One rich and one poor. Must he give both equal nafaqa?

Q: I divorced my wife two years a go. I still have not paid her dowry. I can not afford it. Is it possible if I pay her whatever I can?

Q: Is it permissible for two siblings to make nikkah on the same day to different individuals ? Is there any Islamic rulings against that?

Q: My elder sister don't have any child due to some medical reasons. My family wants that I give her my child which will be born. Am I allowed to give my child and if yes than what about the father's name? Should he or she be called from original father's name or from my brother in-law's name?

Q: Are the Jews and Christian of today still considered to be Ahle Kitaab. Especially the Christians, can one get married to them even though they do not accept Islam on the basis that they are Ahle Kitaab? 

Q: I married a sister about 18 months ago. She had a contract in which I signed that stated I cannot have another wife for five years. Due to unavoidable circumstances I married another wife. Is my first nikkah still valid?

Q: Can I marry someone my mother don't approve of because the man was previously married? Is it wrong to still marry him?

Q: Please tell me is same sex relationship wrong in Islam and why?

Q: A Muslim family adopted a female child after birth. Her mother was a Christian. They brought her up as Muslim. Now she is 30 years old and wants to marry a Sikh boy. Adopted parents are in a dilemma trying to persuade her but she is adamant to Mary Sikh boy. They told her they have nothing to do with her. Adopted parents want to know can they go with her to the Registrar's Office and stand as witness and later bring her home with the Sikh boy and members of her immediate family and offer them food then she goes away not to return in future. Is this acceptable or is it haram? Please advise. 

Q: My wife said that she will let me have a second wife if I increase her allowance from 5 to 10 000 a month. If I enter this agreement with her before I marry, do I still have to give my second wife the same amount in being equal or can I give her a normal allowance of 5 000?