Impurities

Q: In Europe leather men shoes have leather sole. Mostly this leather is from pork-leather since the sole has to be soft, and being soft is one of characteristic of pork-leather. Now it is that most Muslim buy such shoes and wear them. My question is since these shoes are commonly worn and we do not know exactly who wears them only that is very common, how should our behavior be in the rows of Salaah since people do stand feet to feet. Their socks do they become impure by wearing the shoes as inside the shoe there will some humidity after all, and people do touch each other with their feet i.e with the socks. Since this is a matter of Umoom al Balwaa what is the view of the Ulamaa on this issiue?

Q: If one gets 1 drop of urine on his knee, does the skin become pure by wiping the drop away with a dry tissue and thereafter wiping the skin with a wetted tissue ?

Q: I have a few questions regarding purity. I would appreciate  a response.  I am subject to whispers from Shaitain, and want to understand these matters properly so I can confront this issue.

1. How can one use water to clean themselves after defecating in a modern toilet without getting splashes of water on themselves?  I place toilet paper in the water, but water still splashes onto me.  I often shower the lower part of my body after defecating to be precautious, but I am torn between the feeling that I am wasting water, and doing something most people don't do on the one hand, and the desire to be clean without doubt on the other.
2. To clean a garment that has urine or sperm on it, is it sufficient to wash under a lot of running water a sufficient amount of time, or must  it be washed and wrung three times?
3. When cleaning clothes with najasah on them in a washing machine, what if drops of water from the first cycle splash onto the inside roof of the washing machine, and then those drops of water fall back into the water during a later cycle.  Will these drops of water impurify the clothes?  Is this excessive detail?
4. If someone has wet feet and they walk on carpet or slippers on which there is something impure, is the impurity considered to have transferred onto their feet?{C}

Q: Is the clear discharge of a woman which is odorless najis and does it break the wudhu?

س: القيء نجس غليظ أم  خفيف؟

س: ما هي قائمة الأنجاس الخفيفة (يعني أسماؤها) في المذهب الحنفي؟ أنا أعرف أحكامها في الصلاة.

س:  ما هي قائمة الأجناس الغليظة (يعني أسماؤها) في المذهب الحنفي؟ أنا أعرف أحكامها بالنسبة للصلاة. 

Q: When eating in hotels, does the dishes have to be washed 7 times for us to eat form those dishes as we know that liquor etc. are also served aswell as bacon and haraam meat.

Q: If one urinates, then he does his best to release all remaining drops by pressing under the scrotum and squeezing the private organ few times, thereafter he wipes the front of the private organ with a dry tissue. Then he wraps a tissue around it. Now the person sleeps and when he gets up he sees the tissue was scrolled away during sleep and the private organ did touch his underwear. Is his underwear considered impure? i.e. if the private organ is wiped off with a dry tissue without washing, and the dry private organ does touch the underwear, is the underwear impure?

Q: If one touches with ones hand or clothes for example a pigskin leather jacket, does his hand/clothes become impure? If one is praying and someone joins the saff who is wearing a pigskin leather jacket, and during the Salaah the pigskin leather jacket does touch the person for a duration of one rukun does his Salaah become nullified?