no they have made new worlds for that i think its plus1 item worlds or something
You risk more items yourself, the more you risk the more you get. You get good drops if you are risking 25k or more on a pvp world. This means that you would lose it if you died, and it is not protected by the protect item prayer. There is a great guide on how to own in Pvp worlds here: http://www.gameolosophy.com/Games/Online/RuneScape/How-to-Own-in-Pvp-Worlds-in-F2p.538733
You can not corrupt it however you get Corrupted items as drops from PvP - Player Vs. Player worlds.
There is no pvp. They came out with pvp a few months ago and are still updating it.
in pvp worlds, that isn't really an achievement, that just shows your too scared to risk, meaning lame drops.
on the pvp/bounty worlds
Hit x que for pvp then go to pvp master and buy potions for 1 pvp reward each
Yes, of couse(except the safe zones) You lose all your items. You should not take very expensive stuff into PVP. Or into the Wilderness, for that matter, but in PVP you get "skulled" and keep zero items instead of three (or - I believe - one item instead of four, with the appropriate prayer).
yes
Take a look on the world selection.
If you are thinking of the skull on top of your head, that means you have done pvp in the wilderness or the pvp selected worlds. You can't get rid of it manually, you have to wait 20 minutes for it to go away. Also the skull means that when you die you lose everything, to prevent this press the backpack on the prayer menu.
your asking a impossible question because you can't
kill people in pvp worlds they will have a lot of things