You can see it everyday, But cannot touch it at will. What is it?

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

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

What two things can you never eat for breakfast?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

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

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

What has 88 keys?

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