I have done B.Sc with Computer Science now I am looking for job so can you provide me the sectors where I can apply for job ? Also suggest some good companies.

The candidates with B.Sc with Computer Science degree can apply for the following jobs sectors:

Educational institutions ( as professors, lecturers)
Bank jobs
Research organizations
Govt. jobs like IAS,IPS,RRB, bank PO etc
IT sector jobs like software developer, project manager etc
Technical support jobs like project manager, Programmer analyst

Some good companies recruiting the candidates having this degree are:

Zensar

HCL

Tech mahindra

Yahoo

Syntel

Wipro

IBM

TCS

Google, etc..