Hi Mayur,

Each category of science has scopes in their respective fields.

Bsc. Chemistry deals with basically chemical compounds. There is huge scope for chemists i.e, they can go for pharmacy or various industries, chemical manufacturers, forensic, lecturer etc. Apart from these, they are also recruited in other fields such as oil, gas and power sectors and even in defense services.

Bsc. Zoology deals with study of animal biology. Scope of zoology includes work in the fields of environmental consultant, Marine biologist, professor/lecturer, scientist etc.

Bsc. Biotechnology is a study that binds cellular and bio-molecular processes to develop advanced technologies or products. It has wide scope in the field of Medicine, pharmaceutical, industry, agriculture, environment, professor/lecturer.

Bsc. Biochemistry is the study of atoms or molecules which make a living organism. It's scope is in the sector of dr ug manufacturing companies, bl ood bank & services , c ancer research institutes, agriculture and fisheries e ducational institutes, in dustrial laboratories, re search departments.

According to me, the scope of these subjects is wide in their respective fields. So, you can go in the area of your interest.

Best of Luck :)