Can anyone tell me a word in the English dictionary which has a silent 'z'?

What is at the end of a rainbow?

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?

What two things can you never eat for breakfast?

I have eight fingers and two thumbs but I do not live. What Am I?

It belongs to you, but other people use it more than you do. What is it?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

Why is it against the law for a man living in Delhi to be buried in Mumbai?

What goes up but never comes down?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?