What Deficiency does the below rebus represent?

VIT_MIN

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

How can a man go eight days without sleep?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

How many Watermelons are there in the below picture?

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?