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After selecting the research problem, the first step in the research work is survey of literature in the chosen field. The researcher has to search the available literature sources to know whether any work was reported on the same problem and relevant field. If so, he has to see to what extent the work was carried out. Without knowing the details regarding the work done in the earlier years in the same or related problem, it is not possible to carryout the research work. Review of literature in research refers to extensive, exhaustive and systematic survey of publications relevant to the selected field of investigation. The process of literature review begins even before the stage of defining the research topic or problem and continues till the publication of the research report
About the author
Dr. V. Raj, working as a professor in periyar university, salem. He has over 18 years research experience in electrochemistry. He has published over 35 research papers in various journals. Dr. M. Mubarak Ali is working as a Post Doctoral Research Associate (Chemcal Engg)in Yeungnam University, South Korea. Ms. K. Kokila is working as a lecturer.
