Good Riddles

Question: A man obtains a vial of the deadliest venom on earth. A single drop could kill a fully-grown man within seconds. He drinks the entire vial and after a minute, he is not harmed. How did he do it?

Question: Found here : https://play.google.com/store/apps/details?id=com.jeux.enigmes Five bankers are sharing 12 golden ingots. They decide to proceed that way : The elder one will suggest an ingots allotment. The rest will vote for or against it. If the majority accepts, the sharing is ratified. If not, the elder will be dismissed. So, the sharing would be done between the remaining banker with the same rules. Knowing that they are set from left to right in a diminishing order of their ages, how would be the allotment ?

Question: What is often picked but seldom chosen, never walks but can run when frozen?

Question: I am unseen but all people know of me. I am intangible yet sharper than any sword. I come from nothingness but can fell even the mightiest kings.

Question: There is a man dead in the middle of a vast oval, and there was a plane flying in the sky. With an unopened package beside him, how did he die?