Medicine & Health Sciences

Yes, you will be eligible for MBBS entrance examination if your marks in NIOS are above 50 percent (general category), and 40 percent if you are from SC, ST or OBC category. You will have to appear for 5 subjects of NIOS exam. PCBE and one other paper of your choice.

Mechanical engineering is a better option.

You can go to the respective colleges websites & read the instructions for admission in their college. If they have option for online admission then apply.

To get admission in Veterinary course, you have to pass 12th science with minimum 50% marks in Physics, Chemistry & Biology. Along with this, you have to qualify in state level or India level examination conducted for this course.

To pursue B.Pharmacy, you must have completed either D.Pharm or class 12th science stream.

Starting Salary: Lecturer - Rs. 30,000 and Reader - Rs. 40,000 consolidated.

At B.Pharm level, you won't be able to work as scientist. You have to do post graduation in one of the specialised subjects in Pharmacy.

Armed Forces Medical College (AFMC) is a premier medical institute of India. AFMC will accept NEET score for admission to MBBS programmes. AFMC MBBS 2016 admission will be done on the basis candidates marks in NEET 2016 and in ToELR (Test of English Language, Comprehension, Logic and and Reasoning).
As you are in 10th, please complete 12th with Physics, Chemistry & Biology with good score in NEET.

No correspondence course is available in Medical Science so as one to get registration as practitioner. Before 10-15 years, it was possible. This two year Diploma will not help you to work as a medical practitioner.