CTET

As per the Information Bulletin of CTET January 2021, The eligibility criteria of CTET for Primary and Elementary teachers are given below.
1. Minimum Qualifications for becoming Teacher for Classes I-V: Primary Stage (CTET Paper-1): Graduation with at least 50% marks and Bachelor of Education (B.Ed)
2. Minimum Qualifications for becoming Teacher for Classes VI-VIII Elementary stage (CTET-Paper-2): Graduation with at least 50% marks and passed or appearing in 1-year Bachelor in Education (B.Ed). So from above, there is no specific about the graduation subjects, So you are eligible for both stages of teachers.