B.Sc Scope

After doing B.Sc in Chemistry, Botany and Zoology, you can pursue M.Sc in any of these subjects. You can also think of doing your B.Ed which will make you eligible for teaching jobs in high schools. The options are vast and many. Once your post graduation is done prepare well for you NET/JRF/SLET; qualifying which will make you eligible for lectureship. After B.Ed if you also do your M.Ed you will be eligible for teacher training institutes. You can also think of studying genetics or other super specialised fields like plant anatomy, physiology, floriculture, neurobiology, biotechnology, biochemistry. Research and development is also a sort after field. You can try for government jobs (with 7th pay commission it does pay you well) banks and other competitive exams in various fields. The advantage of being a science graduate is you have never restricted entry from any field.

Job opportunities-
Maintenance of Aircraft - aerospace engineers test new aerodynamic and aviation systems, and maintain them. Aircraft designer - aerospace engineers specializing in this field deal with designing, constructing, and testing aircraft, missiles, and space crafts. They may conduct basic and applied research to evaluate adaptability of materials and equipment to aircraft design and manufacture. Aviation Engineer- aerospace engineers in this field deal with the airport design, aircraft navigation technologies, and aerodrome planning. Defense - aeronautical engineers in this field deal with creation, maintenance and deployment of defence aircraft such as fighter jets, choppers, bombers, etc. Also, the job requires being able to handle such aircraft at necessary times. Where all can I work? As everyone here mentioned right, you can work in the government sector with ISRO, DRDO, HAL, etc. And then we can look at private companies such as L & T, Godrej & Boyce Aerospace, Boeing, Airbus, Mahindra, etc. You can also go for Indian Airforce and Indian Navy.