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

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

What has one eye, but can’t see?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?