One Day An Alchemist Brought A King A Bottle Holding A Strange Liquid. The Alchemist Said

Riddle: One day an alchemist brought a king a bottle holding a strange liquid. The alchemist said, "This liquid I discovered will dissolve anything it touches." How did the king know that he was lying?

Answer: The king knew if what he said was true the bottle would get dissolved!

Source: https://www.riddles.com/2008

One day an alchemist brought a king a bottle holding a strange liquid. The alchemist said, "This liquid I discovered will dissolve anything it touches." How did the king know that he was lying? — One day an alchemist brought a king a bottle holding a strange liquid. The alchemist said by Jeff Busche v1.

Riddle: One day an alchemist brought a king a bottle holding a strange liquid. The alchemist said, "This liquid I discovered will dissolve anything it touches." How did the king know that he was lying? Answer: The king knew if what he said was true the bottle would get dissolved! — by Jeff Busche v2.