Hello Adhish Sharma!

Five-year LLB entrance exams: Any student who has passed Class 12 with 50% marks (less 5 % for reserved categories) or has appeared for the Class 12 is eligible to write CLAT and other law entrance exams. A candidate was needed to be below 20 years of age as on July 1 to be eligible for CLAT, however, the criteria has now been scrapped after a Supreme Court's order in 2015. At some top law schools like NLU Delhi; GGSIP University, Delhi (including Amity Law School) and Faculty of Law, Jamia Milia Islamia, Delhi, the upper age limit was 21 years whereas at AMU Law Faculty it was 22 years, which too have been eleminated. Candidates from reserved category were used to be given a relaxation of two years.

Three-year LLB entrance exams: There is no upper age-limit for admission. However a candidate must be at least 17 years of age on the date of application. A graduation degree with 45% marks (40% for reserved category) is the basic qualification required. Universities like DU and BHU require minimum 50% marks while universities like Kurukshetra, Rohtak, Meerut require  only 45% marks in graduation. 

All the best! Thankyou