Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What work can one never finish?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What goes through cities and fields, but never moves?