Can a candidate from J&K with 100% state quota apply for private colleges outside the state ?

Hello Rajni,

The CBSE NEET Information Bulletin 2018 states as follows :-

Candidates from the State of J & K can appear in NEET (UG) for admission to Private Medical/Dental Colleges or any Private/Deemed University and Armed Forces Medical College (AFMC), Pune subject to the fulfilment of eligibility conditions.

You could have even applied for 15% All India Quota by signing a Self-Declaration. However, You are definitely eligible to acquire admissions in private colleges outside your state. I hope I have answered your query. All the best!