Can you solve this riddle?

[Ravisha]

This a bit difficult but I think you can solve this.
1.What is only 15 - letter word in which no letter is repeated?
2.What is the longest word?(It is 46 letters long)

[Tux]

1.There are two 15-letter words that I know of: uncopyrightable and dermatoglyphics.






2.acetylseryltyrosylserylisoleucylthreon...
valyltryptophylalanyl-aspartylprolylis...
lasparaginylglutaminylphenylalanyl-glu...
ysylprolylphenylalanylprolylglutaminyl...
araginylalanylvalylleucylaspartylproly...
isoleucylisoleucylglutamylvalylglutamy...
arginylarginylvalylaspartylaspartyl-al...
glycyl-threonylglycylleucyltyrosylaspa...
serylmethionylserylglycylleucylalyltry...

[sassafrass]

uncopyrightable

[JAS]

1. Uncopyrightable is the longest word in the English language without repeating a letter.

2. Pneumonoultramicroscopicsilicovolcanokoniosis succeeded electrophotomicrographically as the longest word in the English language recognized by the National Puzzlers' League at the opening session of the organization's 103rd semi-annual meeting held at the Hotel New Yorker. The puzzlers explained that the forty-five letter word is the name of a special form of silicosis caused by ultra-micoscopic particles of siliceous volcanic dust.

[lokedout24se7en]

dont know the fist one but longest word is this bro...

acetylseryltyrosylserylisoleucylthreonylserylproly lserylglutaminyl-
phenylalanylvalylphenylalanylleucylserylserylvalyl tryptophylalanyl-
aspartylprolylisoleucylglutamylleucylleucylasparag inylvalylcysteinyl-
threonylserylserylleucylglycylasparaginylglutaminy lphenylalanyl-
glutaminylthreonylglutaminylglutaminylalanylarginy lthreonylthreonyl-
glutaminylvalylglutaminylglutaminylphenylalanylser ylglutaminylvalyl-
tryptophyllysylprolylphenylalanylprolylglutaminyls erylthreonylvalyl-
arginylphenylalanylprolylglycylaspartylvalyltyrosy llysylvalyltyrosyl-
arginyltyrosylasparaginylalanylvalylleucylaspartyl prolylleucylisoleucyl-
threonylalanylleucylleucylglycylthreonylphenylalan ylaspartylthreonyl-
arginylasparaginylarginylisoleucylisoleucylglutamy lvalylglutamyl-
asparaginylglutaminylglutaminylserylprolylthreonyl threonylalanylglutamyl-
threonylleucylaspartylalanylthreonylarginylarginyl valylaspartylaspartyl-
alanylthreonylvalylalanylisoleucylarginylserylalan ylasparaginylisoleucyl-
asparaginylleucylvalylasparaginylglutamylleucylval ylarginylglycyl-
threonylglycylleucyltyrosylasparaginylglutaminylas paraginylthreonyl-
phenylalanylglutamylserylmethionylserylglycylleucy lvalyltryptophyl-
threonylserylalanylprolylalanylserine

1185 letters long

no bullshit