Q: Is it necessary to perform wudhu after smoking a cigarette or wudhu will not break?

Q:

1. Will husband and wife be together in jannah?

2. Which husband will the wife be with if she had more than one husband?

Q: Sometimes I secretly replace my wife's money from her purse with a bigger amount. For example, if she had R50, I take the R50 for myself and replace it with a R100 without her knowing in order to surprise her. When she comes to know of a bigger amount, I lie to her and tell her it was miracle that took place from the side of Allah. It really pleases her when she hears stuff like this, miracles etc. 

My questions are:

1. Am I guilty of the sin of lying?

2. By me replacing her money with a larger amount, is this regarded as Ribaa?

Q: I just wanted to know if a teacher of a school is handing out assignments to a kid and by accident she puts one of the coming up test in that portfolio, if the kid practices that test paper (e.g. works on the maths sums) before the test so they know how to do it, is it haraam?

Q: Is it permissible to use braces on one's teeth to align the teeth and make it straight?

Q: My wife is a revert Muslimah masha Allah and she prays salah daily. Her parents are not Muslims and we do not live with them. Her parents have two dogs. I know that dogs are najis and haram. My question is that her parents are going to England for 5 days and they asked my wife to be in their home for 5 days because nobody is there to look after their dog by giving it food etc. My wife asked me if we can stay in their home for 5 days. The dog lives inside their home so what I should do? 

Q: If I made a promise to Allah and decided to break it. But I didnt break it so is there any punishment for this?

Q: My husband spends 4 nights with his first wife and 3 nights with me. Out of one of the 4 nights with his first wife, he sleeps in a separate bed in another room but under the same roof. Is that counted as 4 nights or 3 nights?

Q: Can I touch my private part on my wife's body or chest? Is there any gunah or not?

Q: Is it wrong for me to stay away from my wife because she will not wear hijab? I told her that she should wear hijab nicely and I encourage her by teaching her how important it is. After I realized that she does not want to change, I stopped seeing her.

Also, before marriage she told me that she would do it. Alhumduallah I have changed a lot since marriage and I don't want to support her sins as I am responsible for it. Since I stopped seeing her, she got upset and now she likes to ignore me at times.

Also is it wrong for her to be very close to and hang out with her male cousins? She also sends them pictures without hijab daily with sweet text messages. I asked her to stop and she won't.