Aim and Scope: Journal of critical reviews (JCR) is peer reviewed open access journal published bimonthly (onward May 2017). JCR is designed to foster the exchange of ideas and transfer of knowledge between scientists and engineers involved in various Field that deal only with investigations or reviews in all fields . It is not limited to the specific details of science and engineering but is instead devoted to a very wide range of subfields in the all Engineering, sciences,Pharmacy,Management,Social Science and Humanities.