Which of the following elements does not belong to group 16 of the periodic table?

Halogens do not occur in the free state.

Which of the following is a hypohalous acid?

How many moles of nitric acid is required to convert 1 mole of sulfur to sulfuric acid?

What temperature does dinitrogen oxide dissociate at?

What is the color of chlorine?

What is the range of the oxidation states shown by phosphorus in its oxoacids?

Which of the following can be used to dry HCl gas?