CBSE Class 10 Board Exams 2021: Syllabus of Social Science exam reduced, check list of deleted topics A total of five units from the social science theory topics have been removed for Class 10 students. Share Updated: Feb 24, 2021, 08:55 PM IST The Central Board of Secondary Education (CBSE) has reduced the syllabus for Class 10 Social Science exam by providing relief to the students all over the country. The reduced syllabus can be seen on the board's official website at cbseacademic.in. The CBSE would conduct the social science exam for class 10 on May 27. A total of five units from the social science theory topics have been removed for the students.