Calcutta University does not accept the Central University entrance test scores for admissions. Instead, it uses:

• West Bengal Joint Entrance Examination for B.Tech programs,
• JELET for B.Tech lateral entry,
• Merit-based admissions for BA, B.Sc, and B.Com programmes,
• Entrance exams such Calcutta University BA LLB exam as  for specific courses like BA LLB.

I recommend you to check the Calcutta University page for more details.

Calcutta University does not consider the valid scores of Central University entrance test for providing admission in its courses. Admission to courses of Calcutta University is provided on different entrance examinations mention below.

1. West Bengal joint entrance examination considered for providing admission in bachelor of Technology.
2. JELET is considered for providing admission in B.Tech lateral entry.
3. Admission to the bachelor of arts Bachelor of Science and bachelor of commerce is merit based.
4. Calcutta University also conducted phone entrance examination for providing admission in various process such as BALLB.

Read more:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/university/university-of-calcutta-kolkata/amp&ved=2ahUKEwjhlJemxuX2AhXazTgGHT1NCWEQFnoECBMQAQ&usg=AOvVaw0ckVkchNlgXPPDg2P9cGON