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

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

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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

How can you leave a room with two legs and return with six legs?

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

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

Which five letter word can be added at the end of below word to form a
valid word?

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What has 88 keys?

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?