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

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What is harder to catch the faster you run?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

What Adam and Eve do not have but the rest of the people have?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

What makes this number unique: 8,549,176,320?

Can you identify if it's a murder or a suicide ?