Salaah

Q: Are the duas in jalsa and qaumah Sunnah or mustahab?

Q: Should an imam read the extra duas in jalsa and qaumah when performing salaah in jamaat? Or are these not to be read while performing jamaat?

Q: Is it permissible to perform Salaah with a short-sleeve kurta?

Q: If asr Salaah is until maghrib and if esha Salaah is until fajr, then why is there a hadith that says asr is until the sun turns yellow or pale and esha is until midnight?

Q: I have one major problem during salaah and that is that I cannot pronounce in the tahiyyaat the last letter (n) of the word " as saliheen" especially during the first tashahhud. So I keep repeating it, until I manage to pronounce it. If I will recite it as "as salihee" without the last letter "n" would that be also valid and the meaning still correct? Or should I recite like "as salih" without "een" at the end, like the tanween we do not recite at end of ayaats?

Q: When leading the salaah, what should one do when his wudhu breaks? Must the salaah be broken, or is there a way for the congregation to continue?

Q: Can my Salaah still be accepted even when I lack concentration?

Q: Is it ok to read Asar and Esha at the time set by Imam Abu Yusuf, especially if one is reading alone and it is easier to do so at that time.

Q:

1. If I miss the first rakaat of jammat after the Imam makes salaam, when I stand to complete the salaah do I read Surah Fatiha or first the thanaa then Surah Fatiha?

2. If I join the Imaam few minutes after he says takbeer, do I still read my thanaa or just lift my hands an keep quite?

Q: I have a question that if the imam is making salaam and I have just started the dua which is read after the durud shareef (Alla humma inni zalamtu), so should I continue reading the dua or should I make Salaam with the Imaam?