Match the italiczed clause to its function in the sentence.
1 . subject whenever i get home will be soon enough.
2 . indirect object choose whichever one you want.
3 . direct object dad will pay whoever finds his dog a reward.
4 . appositive my accomplishment, that i have written one story, doesn't make me an author.
5 . predicate noun this is how i make swedish meatballs.
6 . object of preposition don't judge a person by what he wears.

Noun clause is a clause which acts as subject, direct object, indirect object, object of preposition, predicate noun in a sentence.

1 . Whenever I get home will be soon enough.

the underlined noun clause acts as the subject of the sentence.

2 . Choose whichever one you want.

It acts as an indirect object of the sentence.

3 . Dad will pay whoever finds his dog a reward.

It acts as the direct object.

4 . My accomplishment, that I have written one story, doesn't make me an author.

It acts as an appositive. Appositive is a phrase which explains a noun, here my accomplishment.  

5 .  This is how I make Swedish meatballs.

It acts as a predicate noun.

6 . Don't judge a person by what he wears.

It acts as an object of preposition.

they would have to clean it very clean