I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

What 5-letter word typed in all capital letters can be read the same upside down?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

How many times in a given day, minutes and hour clock comes in a straight line ?

Can you name some countries which do not have the alphabet 'A' in them?

Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.

How do you survive?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Can you find out the missing number in the grid?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?