I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

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?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?