Why is a river so rich ?

What does an Island and the letter T have in common?

An apple seller is hosting a competition. He offers 1000 apples and 10 boxes to the people who pass by. The challenge is to put those 1000 apples in the 10 boxes in such a manner that if he asks for any amount of apples, the person can directly give him the boxes or a combination of boxes. If the person can do it, he promises to give a thousand apples for free.

If you happen to pass by the apple seller, will you be able to win a thousand apples?

What is the end of everything?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

Name a key which is hardest to turn.