Salaah

Q: Is it permissible to make multiple intentions when performing qadha salaah, for example making intention for Tahajjud if performed Tahajjud time or Ishraaq if performed Ishraaq time? 

Also, is it permissible to make intention for Salatul Tauba Hajat, Shukr Istikhaarah when performing qadha salaah?

Q: Is it permissible in Islam to look at an eclipse (if the eclipse is safe to look at for the eyes) and go outside when an eclipse occurs?

Q: When praying with an Imaam, are there any special benefits of standing directly behind him? Some people compete for this position where I am from and I want to know if there is anything to this.

Q: During my early youth days as a baligh teenager, I was regular with my salah. However, my brother used to make me laugh in my salah after which I knew it broke my salah and I would repeat the salah but not the wudu as I did not know for years that this breaks my wudu. Would I need to make qadah of these prayers ?

Q: Does doing an extra sajda-e-sahw affect salaah? 

In the last sitting, I recited tashahhud, did sajda-e-sahw, then recited tashahhud, and became unsure if I had done sajda-e-sahw, so I did it again and finished my salaah. Is the prayer valid?

Q: Can one observe the Shafee madhab when traveling? Especially by plane when the flights are long and one will miss the salaah completely.

Q: What is the fatwa on reading namaaz in the masjid after jamaat is over because the masjid doesn't have a sehn area?

Q: Is it permissible for a woman to perform salaah with her niqaab on if she is in public?