It evolves into Volcarona. It evolves at level 59 though.
No, You must train your Pokemon and evolve them in your DS Game.
You'll need to trade for it or transfer it from the older Pokemon DS games. If you have a Gible you'll need to evolve it.
I can answer all sorts of question for Black, White, Pearl, and Diamond Versions of the Ds games. I can also tell you when or how to evolve certain Pokemon.
Pikachu can only be obtain by: Transfering it from the other Pokemon DS series. Trading for one. Get a Pichu and evolve it by high happiness.
You can't
Hapiness
You'll need to transfer it from the older Pokemon DS games in the Transfer Lab or trade for it. You can also evolve Skitty with a Moon Stone into Delcatty.
No. Pokemon black/white is only for ds and ds lite.
get it to level 40
it doesn't evolve in emerald, but it evolves in diamond pearl and other DS Pokemon games
Legendary Pokemon [same with any other pokemon game for ds] cannot evolve.
you can get or borrow a second ds with the Pokemon diamond/pearl game and trade the kadabra from the 1st ds to the 2nd for it to evolve, and then the newly evolved alakazam back to the 1st ds :]