What is the longest word in the dictionary?

How can you make a TV, a bed, a dog, and a car liquid?

What is at the end of a rainbow?

There are five people. One of them shot and killed one of the other five.
We know following clues:
1. Dan ran in the NY City Marathon yesterday with one of the innocent men.
2. Mike consider being a farmer before he moved to the city.
3. Jeff is a top notch computer consultant and wants to install Ben new computer next week.
4. The murderer had his leg amputated last month.
5. Ben met Jack for the first time six months ago.
6. Jack has been in seclusion since the crime.
7. Dan used to drink heavily.
8. Ben and Jeff built their last computers together.
9. The murderer is Jack's brother. They grew up together in Seattle.

Consider yourself to be a famous detective "Sherlock Homles", Can you find the killer?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

Spot 5 differences in two Christmas tree below:

Can you find out which options fits best with the missing column?

Can you count the number of triangles in the given figure?

Why did the Girl throw the butter out of the window?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?