No one wants to have it, but if one got it, he does not want to lose it. What is It?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Why is a river so rich ?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Which English verb becomes past tense just by rearranging the letters?

Why Aeroplane windows are round?

What has 88 keys?