Vikas, we will need more information like the State that you hold domicile of. With 26 years of age, you are eligible for NEET as there is no upper age limit for NEET. You need to have scored a minimum aggregate of 50% in Physics, Chemistry and Biology in your 12th as you belong to General Category. Now to participate in Delhi State Counselling, you should either have a domicile of Delhi or should have completed your 10th and 12th in any Institution based out of Delhi. For All India Counselling, you can participate without any need for domicile.