You can see it everyday, But cannot touch it at will. What is it?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What can you see in the middle of March and April that you can never see in any other month?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Which wheel of car does not rotate when you turn your car right?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.