Law

Yes, you can take admission in 3 years LLB course without having to appear for entrance exam. There are colleges who offer admission on the merit basis.
LLB is a 3 years long course which has started to be replaced by BA LLB course which is 5 years long. Most colleges these days are preferring to offer BA LLB course to the candidates which can be taken after completing 12th standard. It is mandatory to appear for entrance exam for BA LLB course. The name of entrance exam is CLAT.
There is however no such requirement for LLB course. You can seek direct admission based on the merit. You will have to appear for an interview after which you will be given admission for LLB course.
Although not every college follow this procedure and a large number of them prefer to select candidates through entrance exam. The criteria for entrance exam is:
Eligibility
1. A Bachelor degree in any stream.
2. Minimum of 45 percent marks in Bachelor degree.
3. SC/ST need 40 percent marks.
4. Age limit for LLB is 30 years.
5. SC/ST gets 5 years relaxation in upper age limit.
The criteria for admission based on merit is also same. However you will need to have good percentage to make the cut. Below are some colleges that offer admission through merit.
1. Government Law College (Mumbai)
2. Balaji Law College (Pune)
3. ILS Law College (Pune)

Job opportunities:
Law firms: Amarchand Mangaldas, AZB, Luthra and Luthra, JSA, Trilegal and Khaitan.
Corporate in-house legal departments: HUL, ICICI, ITC, Ernst & Young, PWC.
Private-sector litigation:
PSUs: SEBI, ONGC, IOCL, SAIL
Legal Process Outsourcing: Pangea3, OSC, CPA Global, Clutch Group.
IP firms: Anand & Anand, Remfry & Sagar, Lall & Sethi
Research: Lexis Nexis and Manupatra.
Arbitration consultancies: Karanjawala, Oasis
Chamber practice.
Working with Senior Counsel
Litigation firms
Non-profits
Academia
New avenues
Earlier, the profession of practicing law was limited to criminal and civil litigation. But now, the opportunities available for graduates from any of the top law schools are phenomenal. After the liberalization of India's economy, there is a huge demand for highly skilled lawyers who are adept in the areas of mergers and acquisitions, banking and finance, infrastructure contracts, debt restructuring, FEMA regulations, IPRs, corporate governance, private equity deals, WTO law, etc. Law firms, both international as well as domestic, regularly recruit such lawyers in large numbers. Same is the case with big companies like TATA, Reliance, Infosys, Wipro, TCS, ICICI Bank, etc.
Students who do not like joining business law can find greener pastures in environment or human rights in reputed organisations like CSE, ICRC, UNHCR, etc. For LLM students from premier law schools, business laws and IP laws are the branches, which offer excellent career opportunities.
Most of the magic circle and silver circle law firms like Clifford Chance, Allen and Overy, Herbert Smith, Simmons, etc. visit Indian campuses to recruit students for their various offices across the globe. Almost, all the Indian law firms like Luthra and Luthra, Amarchand Mangaldas, AZB Partners, Nishith Desai Associates have also begun recruiting from the law schools.

Job opportunities:
Law firms: Amarchand Mangaldas, AZB, Luthra and Luthra, JSA, Trilegal and Khaitan.
Corporate in-house legal departments: HUL, ICICI, ITC, Ernst & Young, PWC.
Private-sector litigation:
PSUs: SEBI, ONGC, IOCL, SAIL
Legal Process Outsourcing: Pangea3, OSC, CPA Global, Clutch Group.
IP firms: Anand & Anand, Remfry & Sagar, Lall & Sethi
Research: Lexis Nexis and Manupatra.
Arbitration consultancies: Karanjawala, Oasis
Chamber practice.
Working with Senior Counsel
Litigation firms
Non-profits
Academia
New avenues
Earlier, the profession of practicing law was limited to criminal and civil litigation. But now, the opportunities available for graduates from any of the top law schools are phenomenal. After the liberalization of India's economy, there is a huge demand for highly skilled lawyers who are adept in the areas of mergers and acquisitions, banking and finance, infrastructure contracts, debt restructuring, FEMA regulations, IPRs, corporate governance, private equity deals, WTO law, etc. Law firms, both international as well as domestic, regularly recruit such lawyers in large numbers. Same is the case with big companies like TATA, Reliance, Infosys, Wipro, TCS, ICICI Bank, etc.
Students who do not like joining business law can find greener pastures in environment or human rights in reputed organisations like CSE, ICRC, UNHCR, etc. For LLM students from premier law schools, business laws and IP laws are the branches, which offer excellent career opportunities.
Most of the magic circle and silver circle law firms like Clifford Chance, Allen and Overy, Herbert Smith, Simmons, etc. visit Indian campuses to recruit students for their various offices across the globe. Almost, all the Indian law firms like Luthra and Luthra, Amarchand Mangaldas, AZB Partners, Nishith Desai Associates have also begun recruiting from the law schools.