If you say my name, I will no longer exist. What am I?

Name a key which is hardest to turn.

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

They are three errirs in this question. Can you find them?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

What goes up but never comes down?

Can you make four (4) nines (9) equal 100?

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?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?