Which of the following compounds is soluble in aqua regia?

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

Which of the following statements is not true for the reaction $2 F_{2} + 2 H_{2}O \rightarrow 4 HF + O_{2}$?

Which of the following halides is inert towards hydrolysis at room temperature?

Draw the molecular formula and structure of perbromic acid.

Which of the following is a correct covalent oxide of iodine?