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

Which alphabet letter is a question?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

What is the longest word in the dictionary?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Which is faster, Heat or Cold ? Explain.

How can one talk without saying a single word?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?