It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

A bomb exploded in a room full of married couples and no one died. How?

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

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

Can you count the number of matches in the picture below ?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Which tank will fill first?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?