What goes up but never comes down?

What is red and smells like blue paint?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

The pound is not a finish.

We are sharing a few instructions below, which you have to use in any suitable order to modify the above sentence such that the end sentence is a scientific fact.

- Eliminate a letter and supplement another in its place.
- Take away one word.
- Remove one letter from one word.
- Get rid of two letters from one word.
- Swap a word with its antonym.

When we see 2 but call 10?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

What has many keys but can’t open a single lock?

What can go up a chimney down, but can’t go down a chimney up?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?