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

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What building has the most stories?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Can you find the company name in the pictogram below?

Which country gets ill every time?