Yes, but you must trade it from a Generation IV or Generation III game to get one.
If you transfer one yes. Pikachu are NOT wild Pokemon in Black and White.
NO!
You cannot find pikachu in pokemon black.
Pikachu evolves when you give it a thunderstone.
You will need to trade for it from Pokemon Black or White to get Pikachu. It cannot be found in the wild.
You can find Pikachu in the dreamworld, but not in the regular game.
NO you can't get a pikachu on white (everyone has white what about black)
pokemon white is hareder than pokemon black
Pokemon white reshiram is on black
You can transfer your Dialga, Palkia, and Giratina to your Pokemon black or white version game (NOTE: ONCE YOU HAVE DECIDED TO TRANSFER THE POKEMON TO THE POKEMON TRANSFER LAB IN POKEMON BLACK OR WHITE VERSION, THE POKEMON THAT YOU SENT ARE UNABLE TO RETURN TO YOUR PREVIOUS GAME) or you may just use cheat codes on your AR to find any Pokemon that you desire whether it is a shiny Darkri to an average Pikachu. Have fun!
pikachu will not be in black and white unless you trade one or migrate it. if you watch the anime it will say that pikachu and other kanto/johto Pokemon are extremely rare in unova. shorten it there is a 1 in a million chance that a random A.I. trainer will have a pikachu.
In Pokemon Black Version the legendary is Reshiram and Pokemon White its Zerkrom.The only way to get both is to transfer Zerkrom to Pokemon Black Version or Reshiram to Pokemon White Version.