Qiraat

Q: How many verses of Surah Fatiha is waajib to recite in salaah?

Q: During my witr salaah, sunnah muakkadah salaah and nafl salaah, how loud can I read qiraat? Can it be as loud to the extent that people close to me can hear me?

Q: Is there any qawl amongst the ulama which stats that the sunnat qiraat in salaah is not which surahs are recited but rather the amount recited?

Q: Besides reading a complete Surah or atleast three ayaats of the Quaran after Suratul-Fatiha in salaat, I understand one long ayaat can instead too be read. But how long should the ayaat be and on what basis is the length calculated?

Which long ayaats (if any) are generally deemed preferable to read?

Q: With regards to Friday Fajr salaah: If I read Surah Sajdah in 2 rakaats one week, and the next week read Surah Dahr in 2 rakaats, will I get the fadheelat of the sunnah? Because the musallees are old, and they do not like to read long salaah. For this reason, can I get the reward for the sunnah?

If there's no sunnah reward for this, then how can I get the sunnah reward?

Q: Can I repeat the same Surah in each rakaat of salaah?

Q: Is salaah valid if someone does not pause after every aayat of a surah?

Q: If one was reading the qira'ah in salaah with an audible voice, then read without moving the lips a few times, will the salaah be invalid?

Q: In salaah, after reciting Surah Faatiha, if a person is reading from the middle of a surah, is it preferable to read bismillah or not to read bismillah.

Q: If a Shaafi Imaam makes a major mistake in salaah which changes the meaning completely, what will happen to our salaah as Hanafis? And is there any difference whether we know about it or not?