Lawyer

Hello,
Well, scoring a top rank at law entrance exam doesn't have to do anything with your career as such. Also, the ranks in college do not matter. However, you are judged bases on your percentage in your college but believe me that does not declare your abilities.
For a lawyer, you need to know the law well with all details and cases and also, you must be thorough with substantive as well as procedural law and the advocates act of India.
For a successful lawyer, you need to have an articulation capacity of next level and you must be witty enough to handle the case, client and situations.
It is not necessary that a topper can do all.
However, at a Law school if you do a lot of moot court practice that would be the best help.
Every mooter is not a topper and vice versa.
So, at a law school, you must focus on moot court competition which would help you build the base for the career as a lawyer or advocate.
Also, as a lawyer, you just need to know and apply law.

Well the answer is gonna be little tricky. It is good to know that you want to become lawyer but unfortunately you decided to too late to do so. The Bar Council of India (BCI) has imposed strict age limit for candidates to pursue LLB course.
From now on candidate who are interested in 3 years LLB should not be more than 30 years old. This decision was taken as Bar Council of India felt that candidates from other streams who take LLB later in the career aren't actually serious about it. This serve as major disadvantage to the lawyers hince decided to impose the age limit. By implementing this rule Bar Council of India wants to encourage candidates who want to pursue LLB as their first career choice.
This makes you ineligible for the LLB course. Had you decided to give it a thought few years back, there was a chance but now it is absolutely impossible to get a LLB degree which would be recognized by the Bar Council of India.
You can check the eligibility criteria below for your satisfaction.
Eligibility
1. A graduation degree in any stream from a recognized university.
2. A minimum of 45 percent marks in the graduation course.
3. SC/ST candidates need 40 percent marks.
4. The age limit for LLB course is 30 years.
5. The age limit for SC/ST is 35 years.
There is another similar course called BA LLB which is 5 years long and can be taken after completing 12th. However you are not eligible for this course as well since the age limit for this course has been set for 20 years by the Bar Council of India.
Now you may have heard about the distance education courses for LLB. Some of the universities to offer these courses are:
National Law School of India University
Icfai University
Annamalai University
Directorate of Distance Education Kurukshetra University
Directorate of Distance Education Acharya Nagarjuna University
Centre for Distance Education
Mahatma Gandhi University School of Distance Education
Now it is possible to pursue LLB course from these universities in distance education mode. But it is not advisable since these colleges offer Bachelor OF LAw degrees which are not recognized by the Bar Council of India.
Therefore while you may obtain a law degree, you won't be able to practice in a court as lawyer.

Yes, definitely you are eligible to take admission in 5-year LLB Course after completing your Intermediate examination. But to take admission in top law colleges, you need to complete your intermediate examination and apply for the CLAT Entrance examination.
CLAT stands for Common Law Admission Test and this examination is conducted by 14 National Law Universities for admissions to their under-graduate and post graduate degree programmes: LL.B and LL.M.
If you have completed your Intermediate examination in any discipline with minimum 50% marks, then you are eligible to apply for this examination, final year appearing candidates are also apply for CLAT Examination, but for this your age should not be more than 20 years.
For this year examination was already completed and the results were already declared, if you want to take admission in Law then please apply for next year CLAT Examination and if you scored well then you will get admission in these CLAT Colleges:
# Amity Law School, Delhi
# Faculty of Law, BHU, Varanasi
# Faculty of Law, Delhi University, Delhi
# Faculty of Law, Mumbai University
# Government Law College, Mumbai
# NALSAR, Hyderabad
# NLIU, Bhopal
# NLSIU, Bangalore
# NLU, Jodhpur
# NUALS, Kochi
# NUJS, Kolkata
# RMLNLU, Lucknow
# Symbiosis Societys Law College, Pune
# University Law College, Bangalore University.
The examination is Objective and the question is asked from these areas, so please prepared well for CLAT Examination as per the pattern and syllabus, only then you will get scored well in this examination.
# English including Comprehension
# General Knowledge/ Current Affairs
# Elementary Mathematics (Numerical Ability)
# Legal Aptitude
# Logical Reasoning.
If you want to know more details then please check official website.