Funerals of non-Muslims

Q: According to the Hindu faith when a person passes away, the people who go to the funeral house must wear white. As a Muslim, would I be sinful if I wore white when going to the funeral house?

Q: Is it permissible to go to your neighbour's ceremony where only a serene band is playing and singing about his deceased mum and no other prayers are performed? The neighbour is a Hindu.

Q:

1. May ladies go to the qabrastaan?

2. May we attend a non-Muslims funeral by entering a church and graveyard?

Q: Can a Muslim say "rest in peace" to a non-Muslim who has died? 

Q: I have certain relatives who are non-Muslims. When they pass away, will it be permissible for me to view their corpse?

Q: If I offer namaz-e-janaazah of a Shia, does my nikaah with my wife break?

Q: We are not allowed to attend non-Muslims funeral, so how do we arrange or attend a funeral of a relative if we are Muslim converted to Islam and our family are not Muslim ?

Q: My father is a Hindu! He says he believes in one God but his religion is Hindu. He doesn’t take part in any of the beliefs and he does not attend the temple. The only thing he does is when a death happens he will do what the religion says until the burial.

My dads mother died and she will be cremated next Wednesday. So he will take in part in a few things.

My question is to you please:

1. Am I allowed to keep seeing my dad as I see him regularly?

2. He wants me to attend the ceremony for the cremation and do a speech for him to support him and say a few words on behalf of my grandmother for my dad as I am his first born?

3. If I’m not allowed to do anything would I be able just to attend to be next to him or is it not permissible? He’s asking me just to come to support him and be next to him.

4. My mother and my father divorced when I was young and Alhamdulilah I stayed with my mum and grew up knowing about Islam and I am a Muslim Alhamdulilah. He is my dad and I just want to be there for him but if Islam says no then I can’t argue with that. If you can please let me know I would be very grateful.

Q: My grandfather recently passed away and he was not a Muslim. As a Muslim am I allowed to enter the church to attend the memorial service?

Q: My Christian neighbour has passed away. The funeral will be held in a church. Can I attend the funeral in the church just to show my respects?