When $I_2$ is dissolved in $CCl_4$,the color of the solution formed is .....

$NaCl$ (solid) $+ K_2Cr_2O_7$ (solid) $+$ conc. $H_2SO_4 \xrightarrow{\text{warm}} X$. Reddish brown fumes of $X$. The oxidation state of central atom in compound $X$ is

Most stable compound among the following is

Which of the following statements is correct regarding the molecules $ClO_3$ and $Cl_2O_6$?

Which of the following oxides of iodine is a true covalent oxide?

$HBr$ and $HI$ can reduce sulfuric acid; $HCl$ can reduce $KMnO_4$. Which of the following can $HF$ reduce?