If you say my name, I will no longer exist. What am I?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

Why 1729 is a magic number? Answer Logically.

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I know a nine-letter word having only one vowel.
Do you ?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?