hello aspirant 

you can prepare for following exams after completing graduation

1. upsc- union public service commision. this is the exam which you might have already known about. It offers few of the most respectable jobs in the country like IAS, IPS, IFS, IRS etc

there are three rounds of the exam

1. prelims- in this round the questions are objective with a mixture of current affairs, static GK, english, reasoning, maths.

2. mains- here the exam become a little difficult where there are objective as well as subjective. there is also essay writing and you have to select your main subject along with other subjects for the test.

3. interview 

for more details you can go to https://competition.careers360.com/articles/upsc-civil-services

2. ssc cgl staff selection commission graduate level exam

if you are not thinking to go for upsc since it is one of the most difficult in the country but yet want to go for government jobs then you should start preparing for ssc exam. after qualifying this exam you can get jobs like in railways, ministry of external affairs, intelligence bureau etc. for more details https://competition.careers360.com/exams/ssc-cgl

3. CAT 

if you are thinking to go in corporate world then you can give CAT when you get good percentile in the same exam you can get calls from institutes like IIM, FMS etc the exam is no doubt difficult but the salary and job after it will be amazing for more details you can visit https://bschool.careers360.com/exams/cat

4. msc wildlife