Impurities on the body

Q: If a najaasat-e-ghaleezah that is thin and flowing falls on the body or clothes, it will be excused if the area on which it falls is equal to or less than a fifty cents coin in extent. If the person performs his salaat without washing it off, his salaat will be valid. But to refrain from washing it and to continue offering his salaats in this way is makruh. If it is more than a fifty cents coin, then it will not be excused. Salaat will not be valid if it is not washed off. Beheshwati Zewar (pg 44).

Does this include mazi?

What is meant by makrooh (disliked or sinful)?

Can I still read quran?

Q: Do dried impurity make the body impure when one is sweating?

Q: Is the transparent water that usually comes out from a wound impure?

Q: Is the transparent water that comes out from wound impure?

Q: I felt a splash of urine above my ankle, but I could not wash it immediately because my socks would get wet, so I wiped it thoroughly with my wet hand and decided to wash that area during wudhu. During wudhu, I forgot to wash it and then offered Jumuah salaah. Will my salaah be valid?

Q: I have had rectal problems for the past couple of years and I try to keep a slight gap at the back when I sit on the toilet. However, it felt like something fell on my back and I knew for sure it could not have been urine splashing on me. Later, I tried to check if urine splashes fell on me, but I couldn't tell. When I went the third time I saw one splash fall on the seat, so I was worried if this was happening all the time but I was unaware.

My questions are:

1. Do I have to have a shower and change anything that could have come in contact with me?

2. Are all of my prayers valid?

3. Have I made anything najis from touching that part of my body?

4. This is how most people use the toilet so should I tell my family members to be careful and sit all the way back.

Q: If some drops of urine splash on someones thighs, then is it sufficient to wipe the place with a wet hand to become paak from them?

Q: Sometimes after doing ghusl or at other times when I bend my body and when my stomach is pressed I feel as if a drop of urine is dropped. If this happened, can I perform salaah or is it compulsory to change my underwear? 

Q: I prayed my salah and after I came to the washroom I found a drop of urine to the size of an ant, so I just soaked my hand with water and rubbed it gently, and did not squeeze it, and the stain was gone too. Please tell me whether I am tahir or najis?

Q: The one who wakes up, his hands are napak? What is the ruling for a person who does not wash his hands and goes to the washroom and touches the taps etc. and after washing his hands does not pour water on the taps and closes the tap. So does his hands, the taps etc. become napak? What about if he touches other things, will that also become napak?