Central Bank of India, a government-owned bank, is one of the oldest and largest commercial banks in India. It is based in Mumbai

As per me for take education loan from Central bank of India no need to submit your OBC cast certificate you have to submit following documents with your application for education loan :

Completed loan application form
Documents for proof of age
ID Proof documents: For Identity Proof you can submit following documents,

Aadhaar Card.
Passport.
PAN Card.
Voter ID Card.
Certificate of address having Photo issued by MP/MLA/Group-A Gazetted Officer in letter head.
Certificate of address with photo from Govt. recognized Educational Institutions.
Ration Card.
Driving License.
Arms License.
Certificate of photo identity issued by Village Panchayat head.
Current passbook of Post Office or any scheduled Bank with your Photo on it.

Address Proof Documents: For address proof documents you can submit the following documents,

Voter ID Card.
Certificate of address having Photo issued by MP/MLA/Group-A Gazette Officer in letter head.
Certificate of address with photo from Govt. recognized Educational Institutions.
Aadhaar Card.
Ration Card.
Notarized Sale or lease Agreement.
Current passbook of Post Office or any scheduled Bank with your Photo on it.

Photographs: You need to submit passport sized photographs of applicant to the bank.

Marks sheet: You have to submit photocopies of marks sheet of your highest qualification to the bank.

Proof of Income of Parents or Guardians: ITR of parents or guardians of the loan applicant.