Which of the following compounds is $NOT$ in the solid state at $25^{\circ} C$?

Which of the following statements is incorrect?

Which reaction has a positive value of $\Delta G^o$?

Chlorine acts as a bleaching agent only in the presence of which of the following?

Which of the following elements belongs to the halogen group?

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.