Clothing and Covering the Aurah

Q: If a woman's ankles are exposed in Salaah does her Salaah break? If she hadn't known of this will she have to make qadha for these salaahs?

Q: I would like to know if the salaah of a female is accepted if her ankle becomes exposed (because of the knee bending) while in jalsa position although the pants or aabyah is long enough when standing?

Q: Please advice if a lady has a long dress or abaya on that is not see through must she still wear a pants underneath when praying namaaz?

Q: How is it to perform salaah wearing a T-shirt?

Q: I have heard that Salaah is more makrooh when our trousers (pants) are folded up during Salaah? Please advise with the reference from Hadith.

Q: Is namaaz makruh if the jubba does not cover the elbows?

Q: Someone told me that it is a sin to fold the pants above the ankles before performing salaah, and it is better to let the pants hang below the ankles. He mentioned that there is a hadith of Rasulullah (sallallahu alaihi wasallam) that prohibits folding the garments in salaah. Is this correct?

Q:

1. Is it permissible for a man to wear short sleeves while reading salaah?

2. Is it permissible for a man to read salaah without wearing a topi?

3. Is it permissible for a man to read salaah without a kurta?

Q: Is salaah valid if a person is wearing clothes that are slightly visible (by this I mean like normally every clothes has a slight visibility in it and white clothes which are also slightly visible) not absolutely clear? 

Q: Is Salaah valid if a man reads in a tight fitting outfit?