Answer: Option (C) is the correct answer.
Explanation:
It is known that a weak acid upon dissociation will lead to the formation of a strong conjugate base. Whereas if an acid is strong then it will lead to the formation of a weak conjugate base.
For example, HF is a weak acid and when it will dissociate then it will give hydrogen ion and fluroide ion.
The reaction will be as follows.
[tex]HF \rightarrow H^{+} + F^{-}[/tex]
Here, [tex]F^{-}[/tex] is the conjugate base and [tex]H^{+}[/tex] is the conjugate acid.
Whereas HCl is a strong acid and its [tex]Cl^{-}[/tex] will be a weak conjugate base. Similarly, [tex]ClO^{-}_{4}[/tex] and [tex]NO^{-}_{3}[/tex] are also weak base.
Thus, we can conclude that out of the given options [tex]F^{-}[/tex] is the strongest base.
