What English word has three consecutive double letters?

Solve below rebus puzzle?

They are three errirs in this question. Can you find them?

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

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

Can you spot the hidden clock in this family photo? Only the most eagle-eyed will find it!

I have an eye but still cannot see.

Who am I?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?