Explain why hydrogen is not placed with the halogen in the periodic table.

Discuss the three types of Covalent hydrides.

NH₃ has exceptionally high melting point and boiling point as compared to those of the hydrides of the remaining element of group 15. Explain.

What is para hydrogen?

Write short notes on Deuterium.

How is deuterium prepared from heavy water?

Explain the large scale production of Hydrogen.

What happens when steam is passed over hot iron.

Explain the reaction of water with halogens.

Ice floats on water. Give reason

Show that hydrogen itself acts as a reducing agent.

How does D₂ react with O₂,and halogen? Write balanced equation.

Mention the use of H₂ in metallurgy,

How would you prepare Hydrogen peroxide?

H₂O₂ solutions are stored in plastic bottles only and not in glass bottles. Why ?