Dear Alekha, as you have done your 11th and 12th from Delhi based CBSE School then there is no need for you to provide domicile. Generally, your 11th and 12th passing from Delhi itself is a proof and for this there's no need of domicile. I have also done my 11th and 12th from Delhi only and during my counselling I wasn't asked for domicile.

But if there is a mistake in your documents or your document are not as required then the counselling college may ask you for domicile. So, for safer side carry your domicile certificate with you during counselling. 

All the best. 

Feel free to ask for any query.