IIT Kharagpur - Indian Institute of Technology

Hi
IITs offer only B.tech and not B.Sc. and admissions are through JEE and so far there is no lateral entry admissions offered. Check here for more details.
http://www.iitkgp.ac.in/topfiles/acad_progs.php
If you wish to try another universities, here is the list.
List of Engineering Lateral Entry Entrance Exams
AIEEE All India Engineering Entrance Exams
Calicut University Lateral Entry Entrance Exams
Delhi technical University Lateral Entry Entrance Examination
Kerala University Lateral Entry Exam
KIIT University Lateral Entry Entrance Examination
Lateral Entry Entrance Test LEET
LPU NEAT (National Engineering Aptitude Test)
MIT-Manipal BE Lateral Entry Entrance Exam
Mumbai University Lateral Entry Entrance Examination
Punjab Technical University Lateral Entry Entrance Test (PTU LEET)
UKSEE B.Tech (Lateral Entry) Entrance Exam
Uttarakhand Technical University Lateral Entry Entrance Test
West Bengal University Joint Entrance Exam for Lateral Entry (JELET)

Hey,
If you are a 12th class student, you probably have very few days left for JEE advanced if you haven't yet completed your preparations. Leave aside that, just focus on key areas in every subject and do a thorough revision of those topics. Try to solve past years papers and solve as many good questions as possible. Use good reference books and quality study material. Time management is yet another aspect of getting a good rank. Best of luck with it. Eat well , sleep well and try to minimize waste of time as much as possible. Possibly minimize watching TV and using internet. Prefer to study from hard copies rather than soft copy.
As for books I'll suggest:
Maths:
[practice] Course in Mathematics for IIT-JEE by Tata McGraw Hill publications.
[practice] Problems Plus in IIT Mathematics by A Das Gupta
[practice] Trignometry by S L Loney
ML Khanna
Physics:
[practice] Concepts of Physics by H. C. Verma
[practice] Problems in General Physics by I. E. Irodov
Chemistry :
Organic Chemistry by Morrison and Boyd for Organic Chemistry
Organic Chemistry by Solomons and Fryhle for Organic Chemistry
Concise Inorganic Chemistry by J. D. Lee for Inorganic Chemistry
[practice] Modern Approach to Chemical Calculations by RC Mukherjee

Dear Nooh,
The basic eligibility for admission in a bachelor's degree is successfully completing higher secondary school certificate (10+2) examination with science subject such as physics, maths and chemistry. Admissions are usually done through entrance examinations. However, it is always advisable to get in touch with the institute to get the exact details about the admission procedure as admission process and eligibility vary from institute to institute. For seeking admissions in IITs, it is mandatory to clear JEE Advance.
For the list of institutes, refer to the below link
https://www.shiksha.com/top-engineering-colleges-in-india-rankingpage-44-2-0-0-0
(In the above link, you can refine your search as per your city preference)
Before seeking admission in any institute, kindly check the below mentioned parameters such as affiliation, accreditation, fee structure, curriculum, admission procedure, entrance exam patterns, etc.
Hope this helps.
Wish you luck.