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

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

Which city is three-fifths chick two third cat and 50% goat?

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

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What is the below Rebus indicate?

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.