Dear Madhan, you haven't mentioned if you completed your BE but have few arrears left or if you had arrears but cleared all the subjects and secured your BE degree. You are eligible for CDS in both the cases. If you have completed your BE and are between 20-24 years, you are eligible for CDS. On the other hand, even if you have arrears, you will be considered as final year and are eligible for CDS provided that at the time of admission you can produce relevant documents proving that you have completed the required course on time. For more information, please visit our page at: https://competition.careers360.com/articles/cds-eligibility-criteria