Science

You well know that Engineer at a reputed PSU have more powers in comparison with the Bank PO. Not only power but the money too. Your life would become still and monotonous if you go for Bank PO while in the other case, you never know what you explore in the process.

Hi,
All fields have is better scope in future, but from my point of view, you should take pharmacy as a career and you should have in-depth knowledge of your subject.
All the best.

For pursuing Master's degree, you need to have a Bachelor's degree. Maths depends on your branch in MBA.

Some of the colleges are:
Fergusson College, Pune
M.E.S. Abasaheb Garware College, Pune
Sinhgad College of Science - [SCOS] Ambegaon, Pune
Modern College Of Arts Science and Commerce - [MCASC] Shivajinagar, Pune
DR. D.Y. Patil Arts, Science and Commerce College Pimpri, Pune
Bharati Vidyapeeth University - [BVU], Pune
PES'S Modern College of Arts, Science and Commerce Ganeshkhind, Pune
Institute Of Bioinformatics and Biotechnology - [IBB], PUNE
Vidya Pratishthan's School of Biotechnology Baramati, Pune
Rajiv Gandhi Institute of Information Technology and Biotechnology - [RGITBT], Pune
Nowrosjee Wadia College, Pune

Try to go for a professional B.Sc course rather than B.Sc in PCM/ life sciences. Though chemistry hons. is also a decent option.

Kindly stick to your field till graduation. It will be good if you can do MBA after completing UG in science.

My advice is, you may go for national institute for solar energy, national power training institute, or specialization in solar energy from reputed institutions.