1. Yes, but only with MCEdit. It's not in the creative inventory and you can't craft it.
2. 78
3. No, their saturation is fairly bad.
4. BUD stands for Block Update Detector, and it emits a redstone charge henever a block updates (placing a block next to it, destroying a block next to it, redstone charge, etc.).
5. False, you can use command blocks (and I don't know if you're counting portals)
6. Yes, they teleport before the arrow hits them, but not the flame, so they can burn to death.
7. Swords and Projectiles
8. Gold/ Dark Yellow
9. False, Pickaxe is fastest.
10. False, it is set at 12,000
