I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

Can you tell a 3D object that has just two surfaces?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?