Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What is always in front of you but can’t be seen?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Find out the missing number in the picture attached:

What does an Island and the letter T have in common?

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?

A bomb exploded in a room full of married couples and no one died. How?

Solve below rebus puzzle?

Can you replace the question mark with the correct number in the below table sequence?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?