Many questions come on dates, acts, famous social reformers, books, case work principles, group work methods, community organization principles, social action, social research and social welfare administration.
Cover all of these topics. Make flash cards for the learning.
Prepare the topics using the IGNOU books or any other supplementary books. There are many books available for the CBSE Social Work NET Exam.
Some important websites
http://cbsenetsocialwork.blogspot.in/