What does this rebus puzzle means ?

Which is the smallest number that you can write using all the vowels exactly once?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Can it be possible to build a house that has all its four walls facing towards the South?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

What is the riddle which can be asked all day with a different correct answer each time.

What has many keys but can’t open a single lock?