Faraaidh of wudhu

Q: After salaah I saw a little dough stuck on my nail. Was my wudhu valid? Do I have to repeat my salaah?

Q: I have been using a hair patch on my head since 2016. I just want to ask whether I can do wudhu or ghusal with a completely fixed hair patch? As it's practically impossible to perform wudhu in a public place with lifting the hair patch.

Q: If one has a deep cut and it's plastered or bandaged, and one cannot remove it for wudhu out of fear that the wound will continue bleeding or further be harmed, is it correct to make masah over the bandage?

If the bandage has blood, can the person perfrom salaah with it?

Q: A person made wudhu and performed salaah. Later on, he noticed that there was some dirt stuck under his nail which did not get washed away. Is his wudhu and his salaah valid?

Q: When making wudhu, is it fardh to make masah of any quarter of the head or does it particularly have to be the front of the head?

The reason for enquiring is that if it's fardh to make masah of any quarter, then a woman in pardah will be able to make masah of her head without removing her scarf while traveling.

Q: If a person does not perform a complete wudhu, will his wudhu be valid? If a person performs salaah with such a wudhu, what will be the condition of the salaah?

Q: An old lady has been advised by a doctor to wear compression stockings on her legs for circulation. She doesn't have any wounds etc. on her legs. The stockings are from her knees and only the toes are open.

The stockings are very tight and she requires someone to put it on and remove it for her. Is it permissible for her to make masah over the stockings and only wash the toes for wudhu?

Q:

1. When the boundaries of the face are mentioned in the books of Fiqh, are the boundaries included in the washing i.e. is the bottom of the chin included and must be washed?

2. If someone came and said to you, "I can’t see the bottom part of my nose (just above the moustache) so must it be washed? What would you say to him when telling him about the definition of the face?

Q: If I have treatment done on my face and cannot use water for nine hours, will tayamum suffice?

Q: If I have olive oil in my hair and I make wudhu/ghusl afterwards, is my wudhu/ghusl accepted?