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

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

Can you divide the below-given shape into four equal and identical pieces?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

What two things can you never eat for breakfast?

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

By what process could you make a 'Tea-Table' into food?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?