What does this Rebus Picture means ?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

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

How can you write nineteen in a manner that if we take out one, it becomes twenty?

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?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Look at the picture and find out which square is not linked with any of the other squares.

Bay of Bengal is in which state?