Qur'an

Imaam going into ruku after reciting a sajdah aayat

Q: A few days ago, our imam recited Surah Alaq in the second rakah of Isha salaah. When he recited the aayah of sajdah, he did not perform the sajda-e-tilawat but went into ruku' and completed the salaah as normal. 

My question is: was he right in omitting to do sajda-e-tilawat which my understanding is to be wajib. After the salaah he explained that what he did was permissible.

Touching a booklet that has Quraanic verses and the translation

Q: In my Quran classes we use a para/juz wise booklet. One side of each page has Arabic and it's word to word Urdu translation while the other side is entirely blank lines for us to write the tafseer and notes. There are a few pages of Urdu notes in the starting and ending too. Can this be touched without wudu, because writing tafsir and making notes daily would be a lot difficult otherwise.

Translation of the word "seema" mentioned in Surah Fatah

Q: I read the translation of Surah Fatah 2 days ago. In the last paragraph, Allah says mumin are strict/cruel for kuffar and soft for each other. They look for Allah's rehmat/fazal in rukoo and sujood. They have MEHRAB on their forehead (as a result of salah). 

I have been offering my prayer for 2 and half years. I have tried my best not to leave any salah but I have no mehrab. Does it mean I need any improvement?

Virtue of reciting Surah Dukhaan at night

Q: Sayyiduna Abu Hurayrah (radhiyallahu anhu) narrated that Allah's Messenger (sallallahu alaihi wasallam) said, "If anyone recites (the surah) Haa Meem ad-Dukhan in the night, then he will wake up in the morning with seventy thousand angels seeking forgiveness for Him." (Mishkat 2149) 

Now is this virtue for every night or specific to Friday night that is from Thursday Maghrib to the starting time of Fajar of Jumu'ah?