Oaths & Vows

Q: 

1. A person who has two wife's and at present is living with the fist wife, the second wife made the husband touch the Qur'an and made him say I am your only wife and the first wife isn't my wife she (fist wife) is my sister. The husband said this to make her (second wife) happy and when saying this he had the intention that the first wife is also his wife, what is the Shariah ruling for all this?
2. Will the second wife  be sinful for making the husband say the above touching the Qur'an?
3. Will the husband be sinful for touching the Qur'an and saying the above?
4. By doing the above does it effect the Nikaah in any way?

Q: Husband and wife were doing hajj last year and the wife was not well during hajj. So the husband made dua to Allah said that if his wife has performes all the hajj rituals completely as per quran and sunnah, the husband will sacrifice one goat for gratefulness to Allah for helping his wife to do the hajj rituals according to sunnah. The question is that the meat of the animal should be given to only beggars or neighbours also or some part can be consumed by the husband and wife and their family members?

Q: I broke an oath and I would like to know if it is permissible for me to donate at Islamic Relief USA, where they provide for the needy across the globe, instead of looking for poor people at my hometown due to difficulties?

Q: My question is if somebody intends to expiate an oath by buying ten clothes for ten different individuals and places these clothes in a container/box (like a recycling one, but for clothes) which is supposedly for charity (outside a musalla). Is this acceptable?

Q: I made an oath/promise that if Allah takes me into the third year (of University) I won't look at Haraam videos. So far Alhumdulillah I have kept up this promise but day by day I am finding it hard to keep it. So can I change the promise to something else like pray Tahajjud everyday or something else. Because I am afraid I might break the promise. However I don't plan on breaking the promise but just in case if it does happen.

Note: I am not in the third year yet bet most likely I will be Inshallah.

Q: Is is jaaiz to take qasm like this: la amri as in the poem 'haaza la amri fil fiaali badeeu'

Q: Once while conversing with some body I took khuda ki qasam for some reason. After the conversation I thought about my qasam was right or not. I think I have taken a wrong qasam. The actual sentence for qasam was “khuda ki qasam hum mazaak men bole the”. This sentence was spoken by me for another sentence I spoke earlier (for which I am confused that whether it was spoken in mazaak or not from my side but I took an oath on khuda).

Q: The way before I made a prayer that if I succeed in so and so I will try my level best to offer tahajjud regularly. So if for some reason I skip a day or days then did I commit a sin? Offering tahajjud regularly for the sake of mannat, does this make the reward of tahajjud any less? I made supplication like this "Allah apne kamyaabi di to mein tahajjud ki pabandi karney ki puri koshish karungi "