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

I look at you, you look at me, I raise my right, you raise your left. What am I?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

The more it dries, the wetter it becomes. Can you tell what it is?

What is at the end of a rainbow?