The zinc metal with high surface area and high particle size are called zinc granules. It is preferred for laboratory preparation of hydrogen gas because it has a high surface area due to which it facilitates reaction in a better way. It is a single replacement reaction where zinc metal displaces hydrogen to form hydrogen gas & zinc chloride, a salt. Zinc granules are the solid crystals of zinc. Zinc dust's reactivity makes it a valuable asset in various chemical reactions. It acts as a reducing agent, aiding in the synthesis of organic compounds and serving as a catalyst in numerous industrial processes. Its presence often leads to efficient and controlled transformations in chemical reactions