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

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Can you find out which options fits best with the missing column?

What can you hold in your right hand, but never in your left hand?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

How many times can you subtract the number 5 from 25?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

What is black when you buy it, red when you use it, and gray when you throw it away?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?