B.S. in chemistry. Getting a job in one of the hardcore core branches of the fundamental sciences or engineering sciences is particularly difficult in India because BSc physics, zoology, and botany are all hardcore core areas of BSc. As BSc physics ranks better than any science or engineering branch, you may easily get into any profession linked to any engineering or science with a BSc physics or BSc/BA maths degree abroad, not in India. This is different if you wish to go abroad after earning a BSc in physics, botany, or zoology. Compared to BSc/BS physics/zoology/botany or btech civil/electrical/mechanical, BSc chemistry or btech chemical has greater career opportunities in India.

The order of difficulty can be:
Physics
Zoology
Botany

Hope I have answered your question. All the best!