Hey!

After completing your 10+2, you can get admission in Lady Irwin College and Institute of Home Economics, University of Delhi. Both colleges offer B.Sc. (Honours) and B.Sc. (Pass) in Home Sciences. The admission is on the basis of merit.

The curriculum is vast and a lot of fields are taught in these courses. In your second year of graduation, you can opt for food and nutrition. After that, you can go on to opt for masters in food and nutrition from the same colleges or any other.
You can make your career as a Dietitian, nutritionist, R&D specialist in food companies, and even in the field of Public Health.
Colleges like Mount Caramel College and National Institute of Nutrition - these are also reputed in the field of Nutrition.

Best wishes!