Hey Aiswarya.

Yes, you can study law directly after Class 12th too. There are two types of Law courses in India- 3 year LLB and 5 year integrated LLB. For 3 year LLB you need to complete any graduation degree like BA, BCOM, BBA, BsC etc first and then you can do law. But in case of 5 year integrated law course no such graduation degree is required. It's an Integrated course that combines an Undergraduate degree with Law like BA LLB, BCOM LLB, etc. You can get admission in these directly after class 12th. There are various colleges in India offering this course. You can get admission in top colleges through Entrance exams. Some colleges might also consider you 12th boards score. Here are a few top colleges and their entrances.

CLAT- All National Law Universities

AILET- National Law University Delhi

SLAT- Symbiosis Law School

LSAT- All Private Law colleges

IPU CET- IP University

PU BA/BCOM LLb- Panjab University, Chandigarh

MHCET- GLC Mumbai, ILS Pune, and other law colleges in Maharashtra

Christ University

TS LAWCET Etc

Best of luck.