Medicine

NEET (National Eligibility cum entrance test): NEET is the single entrance examination in the country for admissions to MBBS and BDS programmes, as per a Supreme Court directive in 2016.
Candidates can check below eligibility criteria for NEET 2017:
Earlier, CBSE had said that the number of attempts a candidate can avail at NEET is limited to three and candidates who had already exhausted their three attempts will not be eligible to appear in NEET 2017. However, as per a new notification released on February 3, 2017, CBSE has rolled back a limitation of three attempts and the examination taken in 2017 will be treated as the first attempt irespective of previous attempts
The candidate must have completed age of 17 years at the time of admission or will complete the age on or before 31st December, 2017 I.e. the year of his/her admission to the 1st year M.B.B.S./B.D.S. Course
Indian Nationals, Non Resident Indians (NRIs), Overseas Citizen of India (OCIs), Persons of Indian Origin (PIOs) & Foreign Nationals are eligible for appearing in the National Eligibility Cum Entrance Test (UG), 2017
There will be no maximum age limit for NEET 2017 as per the SC order passed on March 31, 2017.
The candidate must have passed in the subjects of Physics, Chemistry, Biology/Bio-technology and English individually and must have obtained a minimum of 50% marks taken together in Physics, Chemistry and Biology/ Bio-technology at the qualifying examination. For candidates belonging to Scheduled Caste/Scheduled Tribes or Other Backward Classes, the marks obtained in Physics, Chemistry and Biology/Bio-technology taken together in qualifying examination must be minimum 40% instead of 50% for General candidates. Further, for persons for locomotor disability of lower limbs, the minimum of 45% marks for General-PH and 40% marks for SC-PH/ST-PH/OBC-PH are required.
The candidates appearing for Class XII examination in 2017 can also appear for the entrance test provisionally subject to their fulfilling the conditions later.
Minimum Percentage required in 10+2 for candidates:
General-50%
SC/ST/OBC-40%
PH/PWD-45%

Hi Surendranager,
If you complete the below-listed books and complete the test/practice papers, there are high chances that you will get through the NEET exam and get a government medical college.
Some of the popular books for NEET/AIIMS preparation are:
For biology section, please refer to the following books:
Trueman's Biology Vol. 1 & 2
Objective Biology by Dinesh
Pradeep Publications Biology
Prakash Objective Biology
A C Dutta for Botany (Oxford Publication)
GR Bathla Publications for Biology (Theory & Objective)
For Physics:
H C Verma for Physics
Aggarwals Concept of Competition Physics for CBSE PMT
NCERT Physics: CBSE PMT by Anil Aggarwal (Set of 3 Volumes)
NCERT-Physics Part 1&2
Objective Physics for Medical Entrances Examination (Volume 1 and Volume 2)
For Chemistry,
Modern ABC of Chemistry for Class 11th & 12th (Vol. 1 & 2)
Physical Chemistry by O P Tandon
Arihant Organic Chemistry
Dinesh Chemistry
Concise Inorganic Chemistry by J.D. Lee for Inorganic Chemistry
Objective NCERT at your fingertips Chemistry by MTG
Additionally, for AIIMS exam:
For GK section:
You also need to stay abreast of the latest happenings for the GK section of the exam. To achieve this, you must diligently read newspapers, subscribe to a weekly or monthly current affairs magazine and pay attention to the science sections.
And last but not the least, also refer to previous years question papers from the following sources:
Arihant AIIMS MBBS Entrance Examination (Solved Papers 2008-2016)
MTG AIIMS Explorer (17 Years Solved Papers) by Dr. Sandeep Ahlawat
AIIMS 17 years solved papers by Disha Publication