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

People put me on the table and cut me but do not eat me. What am I?

The Little ant seems to be always confused. Do you know why?

What has many keys but can’t open a single lock?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Why did the Girl throw the butter out of the window?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Can you place six X (crosses) in below board without making three in a row in any way ?

What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

I am lying and I always lie. Tell me whether I am lying or telling the truth.