I have found where versions of this have been asked but could find no Official answer (Faq seems to be mum on it)
Can a Bomb with the Delayed Bomb discovery be thrown?(throwing it would likely break it essentially "wasting" the discovery as it triggers the bomb the round it is made)
If it can be thrown Deflect arrows should trigger it since you have to touch it to deflect it.
Since it can be neutralized with a disable device check of dc 10+alch lvl+int mod. (which for my character would be at least 23 10+8+5) would a reflex save vs the same DC (maybe 5 higher) be a logical way to allow deflect arrows to not set it off?
The discovery description states "place" not "set" (semantics I know) or I wouldn't ask.
Get thee to the rules discussion boards!
(You've wandered into the organized play section of the boards. May the gods have mercy on your soul)
Throw it? Sure. It sits and lands until the timer goes off.
Sure. Hold the ticking timebomb. What could go wrong.
The rules can't spell everything out in detail. They rely on the dm to make calls in gray or complicated areas, and this seems like one of them.