Which gas is  used for  providing   inert atmosphere   in high  temperature.

Which gas is produced by heating the salt potassium chlorates?

Baryte is

On heating  phosphoric acid  we get 

The number of bonds in P₄O₁₀ is

Catalyst used in the Deacon's process is

Ionisation enthalpy decreases down the group due to gradual increase in

The most electronegative  element  in the periodic table is

O₂ and O₃ are

Hypo iodous  acid is