Hello aspirant,

Assuming you are a graduate, class 1 government jobs in India are listed below:

Indian Foreign Services
IAS and IPS
Indian Forest Services
Defence Services
Scientists in ISRO and DRDO
RBI Grade B Officer
Jobs in PSU
State Services Commissions
Indian Audit and Accounts Service
Indian Revenue Service (Customs and Central Excise)
ASO in the Ministry of External Affairs


Following are the examinations that you have to clear to get into th above mentioned jobs:

Combined Defence Services Examination

CISF AC(EXE)

National Defence Academy and Naval Academy Examination

Civil services examination

Engineering services examination

Indian statistical services examination

Indian forest services examination

RBI grade B examination

State public service commission exam ( MPSC, MPPSC, UPPSC)

SSC combined graduate level examination

Air force common aptitude exam

All the best!