As you want to get the details of career after B.Tech Chemical Engineering so here is the information of the same for you:

Job Prospects Abroad after B.Tech in Chemical Engineering:
They have openings in Multinational companies in the fields of

Food Processing
Explosive manufacturing
Mineral Processing
Coal Preparation
Pharmaceuticals
Manufacturing Industries

Government Sector Jobs after B.Tech in Chemical Engineering:
Government sector offers a wide variety of jobs for the Chemical Engineering graduates. They have openings in petroleum Industries, refineries, atomic Power Plants, Health Related Research Institutes etc.

Private Sector Jobs after B.Tech in Chemical Engineering:
The people who have Chemical Engineering Graduation have wide variety of job openings in the private sector. The nature of the job varies according to the industry they work.