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

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

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

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

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

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

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

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

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