In this work, ZnO nanorods were achieved by a simple chemical precipitation method in the presence of pure solvent of deionised water at room temperature. X-Ray Diffraction result indicates that ZnO nano rods have wurtzite hexagonal structure without any impurities. It has been seen that the growth orientation of the prepared ZnO nanorods were [101]. Here, we also compared the d-spacing and relative peak intensities from their standard values with different angles. The SEM image confirmed the size and shape of these nanorods. It has also been found that at room temperature ultra violet (UV-Vis) absorption band is around 364 nm (blue shifted as compared to bulk). Finally, the band gap is calculated using UV-absorption peak.