Witr and Nawaafil

Q: If a person prays nafl salah without wudhu, will he have to repeat it?

Q: If a person performs taraweeh salah for several days and his Esha salah was invalid will he have to repeat the taraweeh salaah?

Q: What is the Hanafi ruling regarding praying qadhaa salaah in place of taraweeh salaah during ramadaan?

Q:

1. Zaid is performing Salaah alone. He calls out the Iqaamah for his Fardh Salaah, but then realizes that he has not yet performed his Sunnat-e-Muakkadah Salaah. What should Zaid do in such an instance?
2. Would the ruling change if a Sunnat-e-Ghair-Muakkadah Salaah was not yet performed before he had given the Iqaamah?

Q: What are signs of acceptance of dua or your hajat prayer? And what is the best way/wazifa to ask from Allah Ta'ala?

Q: In Deoband the Ulama say witr prayer in Kaaba is not valid and we need to repeat it as it remains due. Is this correct? Also, can one pray 1 or 3 or 5 rakats in witr?

Q: Is there any Saheeh daleel that Rasulullah (Salallahu Alihi Waslam) and the Sahaba (Radiyallahu Anhum) prayed eight rakat taraweeh? Is taraweeh and tahajjud different salat to be prayed in one night?

Q: I usually read my witr salaah at the time of tahajjud, after the tahajjud salaah. However, sometimes by the time I finish my witr the fajr time has set in. Will this be regarded as qadha? Will I have to repeat it? Will it be better for me to read the witr before sleeping?

Q: Is it permissible to read 1 x 4 rakaat salaah for ishraaq instead of 2 x 2 rakaats salaah. Similarly with awwaabeen etc?

Q: A person read in his Awwabeen Salaah a portion of his qiraat alound and a portion softly. Is his Salaah valid? If valid, is sajda-e-sahw waajib upon him?