Dear Meena, 

You can pursue LLB for 3 years after graduation, as, it's necessary because a lawyer is a social engineer he/she should have proper knowledge and experience of different fields. So, if you have just passed 12th then you can go for BA-LLB from many well-reputed colleges/universities. Well, this year you can not apply for government colleges as dates have been passed. While you want to apply for 3 years degree then the colleges you can apply for:

• Faculty of Law, University of Delhi:

By applying for DU LLB Entrance Test.

Dates of application form this year: May 18, 2019

• Symbiosis Law School, Pune:

By applying for the SLAT (Symbiosis Law Aptitude Test).

Date of application form this year: January 24, 2019

• Jindal Global Law School, Sonipat:

By applying for the LSAT (Law School Admission Test).

Date of application form this year:16 October 2018 - 20 May 2019

• Government Law College, Mumbai:

By applying for the MH CET Law (Maharashtra Common Entrance Test for Law).

Date of application form: 28 January 2019

• ILS Law College, Pune:

By applying for the  MH CET Law (Maharashtra Common Entrance Test for Law).

Date of application form: 28 January 2019

I hope that'll help you, Best of luck for your further career prospects.