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

Replace the question mark with the correct number in the below-given picture?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

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

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

Find the smallest sentence with all the English alphabet.

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

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

Who is He ?