To determine your eligibility for Delhi quota with OBC for Delhi colleges like UCMS, consider the following. Having completed 11th and 12th from a Delhi CBSE school meets the educational criteria for Delhi quota.

Your Central OBC certificate from Jharkhand is valid, but ensure it's recognized by Delhi authorities.

Since your caste is included in the Delhi OBC list, you might be eligible for OBC reservation. Verify your OBC certificate, check the college's admission criteria, and consult with the college or DU authorities to confirm your eligibility.