In the production of $UF_6$ required for the enrichment of ${}^{235}U$,which of the following is used?

When $MnO_2$ and $H_2SO_4$ are added to $NaCl$,a greenish-yellow gas is evolved. Which gas is it?

Chlorine acts as a bleaching agent only in the presence of

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.

Which among the following compounds is $NOT$ a colourless gas?

On heating, chloric acid $(HClO_{3})$ decomposes to: