Science

Here is the complete list for such Entrance Exams.
Make sure you're not late.
http://entrance-exam.net/list-of-biotechnology-entrance-exams/

Here is a little bit of theory in this book meant for quick revision. The problems are divided topic wise and are of various difficulty levels. This book is surely recommended for you if you want to master JEE organic chemistry.
If you want a book for theory purpose then O.P Tandon is certainly better.
For being a Master in problem-solving, you can buy JEE Tablet By Nirmal Singh (Part 1 and 2).

Please refer to the link mentioned below for a list of top colleges offering B.Sc courses in physics:
https://www.shiksha.com/science/articles/top-10-bsc-msc-colleges-in-india-blogId-13473

Hello Shanti,
Admissions process is very dynamic and every state has brought in transparency in whole process. Hence, it's best to check in the system with your login id for the updates and current status.

Hello Umashree,
For doing PG in aeronautical engineering, you need to have obtained a degree in the same branch. Also, for the entrance exam, you need to clear paper related to Aeronautical engineering branch. But if I may ask, why change from ECE? I feel this too is a great branch with lots of opportunities.

Hello Mahesh,
Normally in any state, during to counselling you are not allowed to change branch after the grace period of registration and of giving choices online. However, don't lose hope. After all rounds are over and if seats are vacant then you can seek to change your branch.

A few points you could follow for preparation of KVPY exam are as follows:
1) It is important to know the syllabus of the exam.
2) Manage your time well and solve as many questions as you can.
3) Take mock tests and time yourself so that you familiarize yourself with the pace at which you are working.
4) Take care of your health which should be a primary concern. If you are healthy you will be able to concentrate better, and have a better understanding of the subject matter.
5) Take help from NCERT textbooks for physics, chemistry, maths and biology.
6) Identify your weak and strong points and divide your time for preparation accordingly.

Hi Ankur,
Firstly, you must know what kind of career you are interested in so that you can proceed accordingly. Ask yourself if you are you still interested to study Science? What are your interests? What do you aspire to be? What are your likes and dislikes? Take a psychometric test and map your skills. Choose accordingly. You will excel in a particular path only if you enjoy the subject and are confident in. Follow your passion.

Yes, of course. Go ahead for it and about the salary package it depends on your job experience and the company you are applying to.