Sajdah-e-Tilaawat

Q: I often recite Surah Alaq in salaah, but do not perform the sajdah-tilaawah in the last aayah, even though I recite it. Is my salaah valid? What is the ruling?

Q:

1. The imaam of my masjid recited Surah Al Alaq in Fajr salaah, but forgot to do sajdah tilaawat in the salaah. Will I have to repeat the salaah or should I only do the sajdah tilaawah by myself?

2. What should be done if the imaam forgets to do sajdah tilaawah?

3. Is it important to mention the name of the surah in the niyyah for sajdah tilaawah? Is just mentioning that 'I intend to do sajdah tilaawah of the ayat I heard this morning' enough?

Q: What is the procedure to be followed if we have to do many sajdah tilawats (100). Can we sit on the prayer mat and do niyyat for doing sajdah tilawats and do continous 100 sajdahs.

Q: When a family makes a Quraan khatam, is it correct if one person makes all the sajdahs on completion of the khatam?

Q: When one hears an ayah of sajdah on a cd, or recording etc.(not live) does Sajdah Tilaawah become compulsory?

Q: If I am walking on the street and I recite a verse of sajdah tilaawat several times while continuing to walk, how many sajdahs should I make? 

Q: The Sajdah in Surah Naml is normally made on completion of ayah 26 "Arsh il azeem" (as indicated in the Quraan shareef). According to fatwa hindiyya quoting Allamah Aini it says the sajdah must be made on completing ayah 25:9

وَالنَّمْلِ عِنْدَ قَوْلِهِ: {وَيَعْلَمُ مَا تُخْفُونَ وَمَا تُعْلِنُونَ} [النمل: 25]  

My question based on the above is if a person made the sajdah e tilawat in salaah after ayah 25 instead of ayah 26 will this be regarded as an extra added to the salaah thus requiring the imaam to make a sajdah e sahw or will it be counted as the sajdah e tilawat.

Q:

1. Zaid recited a sajdah verse in salah, he didn't do sajdah tilaawat straight away but did sajdah tilaawat after reciting a few verses. Is the sajda tilaawat valid?

2. Zaid recited a sajdah verse in salah, he didn't do sajdah tilaawat straight away but did sajdah tilaawat in the second rakaat, is the sajda tilaawat valid? 

Q: If one is reciting the Quraan and recites an aayat of sajdah, then at which times can he make the sajdah tilaawat and at which times he should not make the sajdah tilaawat?

Q: Wanted to know if I read an ayah of sajda in namaz and do it in namaz and read it again after namaz. Will the sajdah done in namaz suffice for the sajda after namaaz?