Non-mahrams

Q: I'd like to know when a lady who has her own kids remarries a man who also has his own children, are the children mahram unto each other?

Q: Does a woman have to make purdah from her father-in-law's brother? Is he considered her Mahram?

Q: Are women allowed to unveil in front of their brother in laws?

Is it true that the brother in law and sister in law can look at each other provided they “keep it professional”?

Q: It is necessary for women to make pardah of their names? Some argue that we know the names of our Sahaabiyyah رضى الله عنها. Can Mufti Saheb please explain.

Q: In a joint family, it permissible for a woman to sit in the room where members of the house, including her brother-in-law, have gathered? Is it permissible if she sits in these sittings with her face covered?

Q: Is it permissible for me to sit and eat with my girl cousins while her father, mother, brother and my mother are also seated there.

Also, can I say جَزَاكَ اللَّهُ خَيْرًا and speak about general things like Madrasah with her mother, who is my mother's brother's wife while they are wearing abaya and scarf but part of their hair or neck is exposed?

Q: How should I treat my patrilateral cousins? We have a joint family system, so my cousins live in the same house as mine. Is it okay to not wear a veil in front of them, mixing with them and talking politely with them?

Q: I wanted to know if my wife's elder sister is a mahram to me and can she come in front of me or talk to me or we all family members can eat together or go out together as a family?

Q: I would like advice regarding the following matter:

In our family, it is a norm that the women who are in parda don’t make parda from our family men but they make parda from everyone else. I did the same when I first went into parda but Alhumdulilah with the encouragement from my apas, Allah granted me the taufeeq to wear parda correctly (i.e for all ghair mahram men). 

My family is not in favor of this decision.

1. An elder has reprimanded me for making parda for my mothers sisters husbands due to the fact that I cannot marry them. What should my reply be to such statements since it is an elder? They adamantly tell me to take it out and sit on the eating table.

2. If my uncles (non mahram) enter the kitchen or the area where the females are and they greet me I reply. I avoid any type of conversation with them. But someone had brought it to my attention that this is hurting their feelings as I use to treat them as if they were my fathers from a young age. Am I correct in what I am doing?

3. Some people say that it is sufficient to just avoid talking to all of these non mahram family men and not wear parda in front of them if ones family is like how my family is. Is this correct?

Q: How should you meet your uncle or cousin brother?