A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

If eleven plus two equals one, what does nine plus five equal?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

What has many teeth, but cannot bite?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

What does below pictogram mean?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?