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

At room temperature, the reaction between water and fluorine produces

Hydrolysis of $NCl_3$ gives $NH_3$ and $X$. Which of the following is $X$?

Which one of the following is formed apart from sodium chloride when chlorine reacts with hot concentrated sodium hydroxide?

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

Bromine is obtained on a commercial scale from