how can i get this obc non creamy layer certificate issued from central government ?

Ya sure but your obc certificate should be from central government not from state government If you make your certificate from telagana government then it will not work in du so your certificate should be from central government issued after or from 30 March or if you doesn't do these work it doesn't work. Best of luck

Yes you are eligible under obc category but make sure your obc certificate is issued after 2017.
You check the details on the du portal.
This helps you.
Du bulletin information have all the details regarding everything which helps you taking admission in Delhi university so go through it once.

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