Yes you can apply for jobs in government sector after passing master of computer application course with experience.. here I am giving you information about job scopes after passing MCA course .

After MCA you can apply for following government job exams :
CDS exam
IAS exam
IPS exam
IES exam
Civil service exam
Bank PO exam
NET exam
Bank clerk exam
Railway exams

Government core companies for jobs are :
ONGC
ISRO
BSNL
NTPC
HAL
SAIL
BHEL
DRDO
ECIL
NHPC

Jobs Types
Consultant
System Analyst
Software Programmer
Software Application Architect
Entrepreneur
System manager
Troubleshooter
Internet Expert
Software Tester
Software Engineer

Job Prospects Abroad after MCA
Microsoft
IBM
EDS etc.