Q$.$How does hydrogen that is a gas $/$ or liquid also flammable help us in making energy or electricity what is the principle or concept or method of it converting into eg$.$ Something like electricity we use everyday?

$($ PLZ EXPALIN in details about how that happens$)$

Q$.$ How do we Classifiy hydrogen storage tech : is it On$-$ board $,$ off board hydrogen storage or physical or chemical

Q$.$ How does hydrocarbons store hydrogen? How does it fit in hydrogen storage tech? $($ can we put it in tanks$)$

Q$.$ Are there even different types of hydrogen storage TANKS $($ only$)$ technologies?

Q$.$ I know of ammonia and methanol,

Etc being used for hydrogen storage $($ put isn't that actually hydrogen production? $)$

Can it be categorized as $"$ Hydrogen Storage"??