You're  eligible for AIQ 15% seats of other states apart from the 85% quota of your state.
You need not apply separately for 15% quota seats, however you might have to apply for the 85% state quota seats.

No no after the declaration of results CBSE will release a date when you can resister for all India counseling by online.now just focus on studies
All the best

Since you are domicile of Haryana, you can apply for 85% state quota seats there. You have to apply for this separately. But for rest states, you can get admission in All India quota for which counselling will be done by CBSE. So no need to apply separately for all India quota seats.

yes. For availing the benifit of state quota seats through neet ug, you must apply for the state to which you are domiciled or from where you have done your 10+2..
Good luck..

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