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

Which English verb becomes past tense just by rearranging the letters?

What word is pronounced the same if you take away four of its five letters?

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

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 is at the end of a rainbow?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What goes up but never comes down?

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

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