hi aman,

The Combined Graduate Level examination (CGL) is conducted by Staff Selection Commission (SSC) to recruit candidates for Group B and C posts in various ministries/ departments/ organizations such as Indian Audit and Accounts Department under CAG, Intelligence Bureau, Ministry of Railway, Ministry of External Affairs, Central Bureau of Investigation, Central Bureau of Narcotics, National Investigation Agency (NIA), etc.

you can have the details such as exam pattern,syllabus,selection procedure in below link.i suggest you to go through the link.

https://competition.careers360.com/exams/ssc-cgl

I Hope this information will be useful to you.

if you need additional information,let us know to help you.

Thank you!!!:)