Which of the following substances is the strongest fluoride ion acceptor?

With respect to hypochlorite,chlorate,and perchlorate ions,choose the correct statement$(s)$.
$A.$ The hypochlorite ion is the strongest conjugate base.
$B.$ The molecular shape of only the chlorate ion is influenced by the lone pair of electrons on $Cl$.
$C.$ The hypochlorite and chlorate ions disproportionate to give rise to an identical set of ions.
$D.$ The hypochlorite ion oxidizes the sulfite ion.

When cold $NaOH$ reacts with $Cl_2$,which of the following is formed?

Sodium chloride when heated with conc. $H_2SO_4$ and solid potassium dichromate gives

When $Br_2$ is treated with aqueous solutions of $NaF$,$NaCl$,and $NaI$ separately,which of the following occurs?

Which is the incorrect order?