Qualities of the Imaam

Q: Can an old man who performs salaah on a chair lead the jamaat salaah in the Musjid?

Q: Is it ok to bypass the nearest mosque and go to a distant mosque in order to pray there, because the Imam of the (distant) mosque has good tajweed and tarteel and prays bigger surahs and is well acquainted with the Masail?

Q: What is the ruling regarding praying behind an Imam considering the Imaam shaves his beard and his pants are below his ankles? What should we do in this condition?

Q: Can you appoint a person who has the latest style short cut beard much shorter than a fist length to make jumah. 

Q: Can the Imaam make a juma khutbah and perform the salaah with his scarf covering his face so much so that only his nose is exposed. When he goes into ruku the scarf hangs down both sides onto the ground. 

Q: Is my prayer valid behind an Imam

1. Who was wearing normal thin socks and I saw him doing masah on them during wudhu.

2. Who was wearing normal thin socks and I did not saw him doing masah on them.

Please note that majority of the people do masah on normal Socks here.

Q: If any Imam chews tobacco (zarda plan), is my salat complete behind that Imam?

Q:

1. Is it permissible to pray behind an Imam who smokes?

2. Also, is it permissible to learn Quran from someone who smokes cigarettes?

Q: I went to a masjid near my office for Esha prayers. The imam came in wearing a cap that was embroidered with a picture of Our Prophet ﷺ slippers all over it. Is the Imaam in contention of bid'ah? Is my prayer accepted? 

Q: If unintentionally drops of urine come onto my underwear, can I sometimes be Imam and lead prayers if required?