How can we produce a large scale of hydrogen?

Hydrogen is a _______________

What is the chemical formula of deuterosulphuric acid?

Hydrides made from group 1 and 2 are known as _______

Dielectric constant of water is ________

Compounds can undergo hydrolysis with water.

(BeH2)n is a __________

What is the acute angle between oxygen and hydrogen in the solid form of hydrogen peroxide?