How can you make a TV, a bed, a dog, and a car liquid?

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 ?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What does the below rebus puzzle mean?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?