B.Sc

Hi Ankit,
There are multiple universities who accept an entrance exam known as JAM, it is held by IIT-Karaghpur this year and if you get a good score, you will get a chance to join IITs. On the other hand, the University of Pune is offering their own entrance exam. This university has a centre known as IUCA (Inter University Centre for Astrophysics). The professors from IUCA come and teach M.Sc classes (it's written on the website of IUCA). You can look into this option if you want to pursue your career in astrophysics. Other researcher institutes offer another exam known as JEST you can apply for that and get into IIA (Indian Institute of Astrophysics, Bangalore) if your score is good enough.
Hope this helps.
All the best.

You need to focus on the syllabus of exam for class 12th, you just appeared. There are 150 questions comprising of 50 from each P, C&M concluding to a maximum mark of 450. If you are good at scoring 222, you'll get BHU.
Prepare well, solve questions and also theoretical questions in Science field and you'll make it to BHU. There's no need to go beyond the syllabus, what is asked in board exams for class 12th, and if you need more assistance you can purchase an entrance book which comes in cover as BHU UETB. Sc. Math entrance by any of the publication. You can also search the papers of last year entrance exams which are availed on bhuonline.in

Undertaking the B.Sc. (Hons. ). Applied Science through the Learning at Work Partnership Degree Programme allows you to study for a university degree without leaving your job. This degree provides you with the opportunity to demonstrate the application of scientific knowledge in the workplace. What is special about this course? B.Sc. (Hons) Applied Science is a new degree offering skills and practical experience in subjects including biology, chemistry, laboratory practice and instrumentation, and focuses on recent advances in a range of scientific fields. You will learn a range of laboratory techniques used in disciplines such as Microbiology, Biochemistry, Chemistry and Molecular Biology. On completion of the degree you will have gained experience and skills required for employment in industries such as biotechnology, food and drink, microbiology, environmental protection and scientific research. Special features:
High importance is given to practical skills. You will gain valuable experience of laboratory practice in chemistry, biology and instrumentation. B.Sc. (Hons. ). Applied Science prepares you for employment in a wide range of scientific disciplines.