The syllabus for Masters in psychology entrance exam generally includes all the papers of psychology, for example- social psychology, general psychology, research methodology, etc. that were taught to you in graduation. Some colleges like TISS ask GK, logical reasoning and English in their entrance test. You can prepare all those papers and refer to past year question papers for practice of the  same.

Hello there,

For the entrance examination of Postgraduate courses in Psychology it is most advicable to complete your undergraudate syllabus of all the 3 years (6 semesters). 

Starting from General PSychology to Social, Inudstrial, Statistics, Clinical, Health & counseling psychology everything should be completed to ace the entrance examinations. Make sure to solve as many ojectie questions as possible.

The following books might help you in preparation.

1. Introdction to Psychology - Morgan And King

2. Social Psychology - Arun Kumar Singh

3. Industrial Psychology - Ghosh and Ghorpade

4. Clinical Psychology - Butcher, Pearson Publications

5. Statistics - A K Singh

6. Objective psychology - RPH Editorial Board

Hope this helps.