Combining Salaahs

Q: You have mentioned that "One wudhu will suffice for both the namaazes if they are read in the time of Esha" but my question is that what if the the both salaah Maghrib & Esha are combined and prayed in Maghrib time, will the wudhu of Maghrib suffice for Esha salaah? 

Musjid extension

Q: Our Musjid, has gone through an extension on the left side, However there is a separating wall (not completely separated few rows the an entrance, and few rows again) in between the Original Musjid and the extension. The extension is used for itikaf and is part of the Musjid. Usually on Jumma or when the musjid gets full the extension is used. The set up is similar to Musjidun Nabawai alhis salam. where outside the the front row continues, separated by walls:

  1. Is the reward the same when standing in the front row,between the separating walls?
  2. Should the original Musjid be filled 1st, then the extension or vice versa?
  3. Can I stand alone in the extension to get the reward of filling the front rows?

Raising the hands for Dua in Salaah

Q: In Arabian countries "Dua" will be recited by the Imam in gathering by lifting hands after "Dua-e-Qunoot" (before going for ruku') in "Waib-ul- witar" Prayer during Ramzan, in particular and before going for Rukuh of third Rakahat of Maghrib Prayer in general and why this procedure is not practiced in India, Kindly enlighten this.