No one wants to have it, but if one got it, he does not want to lose it. What is It?

What is black when you buy it, red when you use it, and gray when you throw it away?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?