I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Can you decipher the two rows to find the hidden word?

A crime was committed at baker street. Ibrahim Dakota who was shot in the stomach was the main suspect. Sherlock questioned the suspect. The conversation started as:
Sherlock: What's your story, Ibrahim?
Ibrahim: I was walking around baker street and suddenly a man from the back shot me. I ran as fast as I could to save my life".
Sherlock: That is enough (and ask the police to arrest him).

Why does Sherlock think he is the murderer?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What does the below image rebus riddle means ?

You need to move three matchsticks to form three squares. Can you do it?

Which is faster, Heat or Cold ? Explain.

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

What is next number in the pattern below:

131 517 192 123 ?