Bleaching powder is a mixed calcium salt of

All the compounds listed in Column $I$ react with water. Match the result of the respective reactions with the appropriate options listed in Column $II$.

Column $I$	Column $II$
$(A). (CH_3)_2 SiCl_2$	$(p).$ Hydrogen halide formation
$(B). XeF_4$	$(q).$ Redox reaction
$(C). Cl_2$	$(r).$ Reacts with glass
$(D). VCl_5$	$(s).$ Polymerization
	$(t). O_2$ formation

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

When $1 \ mol$ of fluorine reacts with $2 \ mol$ of hot and concentrated $KOH$,the products formed are $KF$,$H_2O$,and $O_2$. What is the molar ratio of $KF$,$H_2O$,and $O_2$ produced?

Which of the following interhalogen compounds is in liquid state at room temperature?

Which halogen does not show variable oxidation state?