Name a key which is hardest to turn.

What part of the chicken has the most feathers?

There was a blind beggar living on the footpath of a street. Suddenly one day, the beggar's brother died. What was the relation of the blind beggar with the person who died?

PS: Brother is not the answer.

What is the difference between a jeweller and a jailer?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

Which Travels Faster? Solve below famous picture riddle:

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

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?