Science

If you are M.Sc in chemistry and holding Master's degree, you can apply for the GATE examination. According to the eligibility criteria in any branch of science, mathematics or any other equivalent Master's degree can apply. Also, those who are in the final or pre-final year can also apply.
All the best.

You should go for KVPY SA exam is conducted for class 12th. KVPY SA exam will have single paper with objective type multiple choice questions. The duration of the paper is 3 hours. The paper will have negative marking. For KVPY preparation, NCERT books are best books.
Besides school books, you can use following books for reference:
1. Chemistry: P Bahadur for physical chemistry.
2. Solomons for organic chemistry.
3. OP Tandon for inorganic chemistry.
4. Physics: HC Verma Vol 1 and 2.
5. Mathematics: RS Agarwal, SL Loney.
6. Biology: NCERT.
Best of luck.

No, you need to Masters in psychology.

Hi Kunal,
Every management course like BBA will have one or two papers called quantitative techniques.
All the best.

You have to get into a B.Sc. college, where you will be guided by your college faculty for your future perspective.
All the best.

No after B.Sc, you should not do it.

Yes, but you need to do hard work.