Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

Count the squares in the matchstick puzzle below?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Can you make a six-letter word using the letters N, A and B ?

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?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

What Deficiency does the below rebus represent?

VIT_MIN