Yes. We need in Salat al-Jama'ah (Congregation Prayer) to recite every thing except Sura Al-Hamd and the other Sura in the first and second Rak'ats because it is the responsibility of Imam Al-Jama'ah.

Wassalam

'Ilm Al-Rijaal is the knowledge about the authenticity of narrators which leads us to evaluate their narrations to decide whether we can believe them or not.

In Quran Allah (SAWA) says: ( قل آلله أذن لكم أم على الله تفترون )Did Allah permit you or you falsely claim on Him?(Sura Younus;59)

Applying any material on the skin or scalp is allowed even if it is Najis material as far as you clean the area before performing Wudhu or Salaah. Synthetic alcohol is not Najis according to many Maraaje'. Some scholars say that any intoxicant alcohol is Najis. Nevertheless, whether it is Najis or not Najis, it is allowed to apply it on the body or scalp.

Wassalam

The reply depends on what you mean by adoption. If you mean looking after and bringing up a child, then it is great deed of reward. The Hadeeth says: Best of the homes is a home where an orphan lives with honor. Also it is narrated from the Prophet Muhammad (SAWA): I and orphan sponsor are in the Paradise together.

But if you mean to look after the child and deprive him from the name of his real father , mother and original family, then it is unlawful in Islam to deprive the child from the name of his father, mother and original family.

Bismillah,

Du'a is a very powerful tool whereby a servant implores and supplicates to Allah swt who is our Master.  

In order to increase one's life span it has been narrated by the pristine household of the Ahlulbayt a.s. to give charity to the poorpoor and those who are living in impoverished conditions.  This noble act and kind gesture is highly recommendrecommended in Islam apart from reciting some particupar Du'as as prescribed by the blessed prophet saw.