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

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

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What goes up but never comes down?