Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

What does this rebus means ?

How can you make a TV, a bed, a dog, and a car liquid?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?