lvl 64
at level 50
When its attack reaches 72.
YES at level 41/42
I believe at level 41 but it might be 42
you can get dieno in victory road
You will have to wait until more information is put out for that answer. You could also keep lvling your Dieno until it evolves. Pokemon White & Black is a relatively new game... I'm sorry I couldn't give you an answer.
hydreigon at level 64
Dieno evolves into Zweilous starting at level 50 and then into Hydreigon starting at level 64.
Deino will evolve once it reaches Level 50.
dieno evolves at level 50
Weavile does not evolve in Pokemon Black.
All the starters evolve in Pokemon Black. Many other Pokemon evolve as well.