Conditions for the validity of Salaah

Q: Is it permissible to perform salaah with one's sleeves folded but the sleeves don't go above the elbows? Meaning the elbows are covered but the sleeves are folded.

Q: Is it permissible to join the salaahs when a person undertakes a journey and is a musafir? 

Example, you are leaving a country and it is zuhr time so before the flight you join Zuhr and asr? Or you visited a country and you go to a shop and maghrib time sets in so you read maghrib and Isha together? Is this permissible and if not, does one get a sin when they do it?

Q: Let’s say someone does wudu for each salah but intentionally prays with impurity on his body. Is him doing wudu for each salah a clear indication that he’s NOT rejecting the obligation of removing impurity on the body before salah?

Q: Is someone who prays 5 times a day consistently with proper wudhu but knowingly and intentionally prays with impurity on the body, clothes or prayer area rejecting the obligation of purification, would this person be considered a disbeliever and be in hell forever? 

Is this person performing wudhu for each salah clearly showing that he is NOT rejecting the obligation of purification?

Q: Given the spread and propagation of Interfaith and the Abrahamic Religion, what is the shar'i ruling on performing Salaah in a multi-faith prayer room? 

Multi-faith prayer rooms are now found at airports, petrol stations, malls, offices etc. Some multi-faith prayer rooms have the symbols for each religion, at together, displayed on the wall or door.

Q: Is salaat valid if performed with a small tear in one's trouser exposing a little bit of one's thigh? Does salaat performed in this condition have to be repeated?

Q: When reading say maybe 4 sunnats of Zuhr Salaah. Can one make multiple intentions, for example, intention for wudhu salaah as well. Or is multiple intentions only acceptable in nafl salaah? 

Q: I was travelling to Durban and stopped in Harrismith to make Zohr. On my was back I stopped again to make Zohr, and was told after I completed my salah that I was facing the wrong direction. I am not sure if the brother was correct, but do I need to repeat my salaah?

Q: 

1. Is it permissible to shoot paintballs, now that there is evidence to show that the paintballs are made from swine?
Will the masala differ according to how much of pig gelatine is used in the paintball? 

2. Can a person perform salaah if he has these paintball stains on his clothes?

Q: Is it recommended to delay the Fajr prayer and Asr prayer?