The number of halogen$(s)$ forming halic $(V)$ acid is ..... .

Chlorine reacts with hot and concentrated $NaOH$ and produces compounds $(X)$ and $(Y)$. Compound $(X)$ gives a white precipitate with silver nitrate solution. The average bond order between $Cl$ and $O$ atoms in $(Y)$ is

The incorrect order is

$HBr$ and $HI$ reduce sulphuric acid,$HCl$ can reduce $KMnO_4$ and $HF$ can reduce:

Which of the following elements is in a liquid state at room temperature?

The products obtained when chlorine gas reacts with cold and dilute aqueous $NaOH$ are: