Select the word-pair in which the two words are related in the same way as the two word-pair.

Author: Book

Direction: In the following, select the related word from the given alternatives.
Antiseptic : Germs :: Antidote : ?

Direction: In the following question, select the related word from the given alternatives. 

College : Dean :: Museum : ? 

Direction: In the following question, select the related letters from the given alternatives.
Food : Hunger :: Sleep : ? 

Confirmed: Inveterate:: Financial : ? 

In each of the following questions, select the related letter/word/ number from the given alternatives.
8 : 584 :: 4  : ?

Direction: In the following question, select the related letters from the given alternatives.
Touch : Feel :: Great : ? 

Given set
10.5, 15.0, 21.5