Nikaah & Marriage Issues

Q: A man is married for 15 odd years (with kids) and thereafter decides to take on a second wife. He has provided for his first wife a house of x value however wants to provide for his future second wife a smaller accommodation of lesser value. He says it is safer for her to stay in. The future second wife is not materialistic but his decision without her consent has already left her feeling inferior and she is now unsure about her future with this man. What is the ruling on this and what do you advise?

Q: Who will be a representative of a revert Muslim women. All her family, parents, etc are non Muslim. 

Q: At what age does your nephews become mahram? And your brother who is divorced, is his son regarded as your mahram?

Q: A person in my family is arranging a walima dinner for his son. As he is poor, he is going to pay the dinner expenditures from the amount of zakaat received by others (including myself). My question is, is it permissible for me to attend the walima dinner?

Q: A girl got a good proposal for her marriage. Everybody is satisfied with all other aspects except the boy's age, he is only one year older than the girl so, as the girls get older soon due to delivery and all, girls parents are in confusion whether to accept the proposal or not. May mufti Saheb please give your precious suggestion in this regard?

Q: Kindly assist me if possible. My eldest son is 23 years old and Alhamdulillah he is a hafiz as well. He is ready for marriage and it is his wish to marry in the Sayyid family (lineage of our Prophet Sallallahu Alayhi Wasallam). How do I find someone as per his wish. Please make dua that Allah Ta'ala grants him a suitable spouse.

Q: Is sexual intimacy prior to bridal departure (rukhsati) permissible if Nikkah is already done. If this is not permissible then why?

Q: Is my father's brother(chacha) mahram for my sister and my wife?

Q: The people who watch pornography and also watch porn videos, is this equal to Zina?