Before Job opportunity,  you have to think about your interest. You should opt the course as based on your interest. If you have interest in chemistry then opt BSc PCM, if you have interest in Computer Science, then optB for B.Sc PMC.

In terms of Job opportunities,  B. Sc PMC seems to be a better option than B. Sc PCM. Here is a short description of the two courses.... 

B.Sc PMC has emerged as one of the popular course in Sciences whereas B. Sc PCM is the traditional,  to be opted,  course in our country. 

B. Sc PMC provides you with extra job opportunities. It is a growing field with a large number of job opportunities in India as well as abroad. In this present era of technology,  including computer science in your graduation subject could play a helpful role in your career. The scope after B. Sc PMC includes Computer scientist,  System Analyst,  Graphic designer etc. 

B. Sc PCM provides you job in any of these three areas Physics,  Mathematics and Chemistry.Other than opting for higher education, You can work as a scientist in DRDO,  Become a chemist,  Research Analyst,  Teacher etc. 

There are a number of colleges and universities in India that have both the courseB. Sc PCM as well as B. Sc PMC. 

Hey Vinay,

Course should be of your interest. If you're highly interested in whatever you're doing, it won't take a toll on you and you'll achieve success eventually.

Well, regarding your question. B.Sc Computer Science is one of the most popular field in the IT domain. It is a consistently growing field with a large variety of job opportunities both in India and abroad as the industry and demand grows. This degree can lead you to profiles like computer scientist or an information systems manager or a networking specialist whose job is to draw the technological roadmap for the organisation, ensure efficient management of the available computer facilities, handle smooth functioning of the local area and wide area networking, implement cyber security systems, look after software and hardware system upgrading, and manage system designing and technical analysis for the organisation.

Whereas, B.Sc PCM is a plain graduate level course which will not focus on any particular path. It'll give you an opportunity to learn a lot and apply that knowledge for your further studies. After doing this undergraduate degree you can apply for M.Sc in any field like Physics, Chemistry and Maths. Then apply for GATE, NATE, SET, NET and etc for fellowship as a junior scientist or for Ph.D

Everything depends on you. Wherever you're interested go for it. Don't look for the job opportunities. Since, India is a developing country, it won't stop any development. Every field will grow with time. All the best!