Words with 'k' as the first letter that end with 'ch'

How many letters does the longest word from this page contain?
'kaffeeklatsch'.

Is there an example word from this page which could be considered as unique?
Undoubtedly one of the most peculiar words from this list of words that start with 'k' and end with 'ch' is 'kutch'. The standard definition of 'kutch' is as follows: "The packet of vellum leaves in which the gold is first beaten into thin sheets. See Catechu.".

How many words are available using these specific combinations of letters?
You can go with up to 32 words covering all combinations.

Is there any word on this page that jumps out as the most popular?
As far as popular words go, there's 'ketch' which is the 34407^th most popular word.

What's the highest number of points you could get in Scrabble using this list of words that start with 'k' and end with 'ch'?
Using this particular combination, you can play 'keypunch' which gets 22 points in Scrabble.