Zinc granules are the solid crystals of zinc. It is a single replacement reaction in which hydrogen is displaced by zinc metal to form hydrogen gas and a salt, zinc chloride. To form bubbles of hydrogen, zinc reacts rapidly with the acid.

Application

Due to the large surface area, zinc is used in the form of granules in the production process of hydrogen gas. Zinc granules are the solid crystals of zinc. Zinc reacts easily with the acid to produce hydrogen bubbles.