Science

i m also completed my bsc in Agriculture.there is less chances to get good job after bsc.but u can get field officer post in bank.and after bsc if u want to do ABM then u can get better job .

Rahul. Admission for B.Sc is based on your percentage your score in your XII board exams, its not based on your JEE points. JEE point are only for Engineering level.
All the Best.
You can apply for B.Sc in any Government or Private institution, just select the course you are interested in and also look at the college facilities, skill development, fee structure and placements.
Good Luck.

First step to become scientist is to choose a stream( Physics / Chemistry etc) in Science in which you want to specialise. Standard education profile is BSc (Hons) MSc PhD. After your efucation you can join R&D organisation such as CSIR, DRDO, ISRO, TIFR etc to work as scientist. Some of Technical Institutes or universities also have openings for scientists.

Hlo. .I have cleared IIT JAM Exam Mathematics 2016
I think you should prefer these books :
Classical Mechanics: H. Goldstein
Principles of Quantum mechanics: David J.Graffith
Modern Physics:R.Mukesh
Concepts of Modern Physics:Arthur Beiser
Mathematical Methods for physics:George B. Arkken
You should take a book of : IIT JAM Physics last 10 years solved question papers and prepare for them. You will get an idea about the questions asked in exams.
Best of luck for your exam.