Chandresh kumar,

For admission to any institute You must produce the documents as per the guidelines. Guidelines for obc ncl certificate in delhi University is as follows -

• OBC (Non-Creamy Layer) Certificate (in the name of the Applicant) issued by the competent authority, and wherein the caste is in the OBC central list issued by http://ncbc.nic.in.
• The validity of the certificate is of 12 months so you must produce a valid certificate as per the year of admission.

In your case your certificate is issued by central government, which is same as mentioned above. So it won't make you trouble.

All the best :)