It is always ahead of me yet I can never see it. What is it?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Can you find out the remainder when 3^300 is divided by 5?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?