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?

I know a nine-letter word having only one vowel.
Do you ?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

Can you name an animal whose killing cannot be performed without spilling your own blood?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?