I am found in water, but I am not wet; I can be in the air, but I am not seen. What am I?

Category: Knowledge · Difficulty: medium

Hint: It's a basic building block of the universe.

Answer

Hydrogen gas

Explanation

Hydrogen is a gas present in water but is not wet itself.

This is a medium knowledge riddle — a moderate challenge for most people. The answer is Hydrogen gas.

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