Hello Pramod,

You have to register seperately for AIQ and state quota because every state have their particular sites where their candidates have to register , according to that state merit list is prepared only for the registered candidates, acoording to state ranks the colleges are alloted. For further information you can refer to the link below :-

https://medicine.careers360.com/articles/how-fill-neet-application-form

I hope this information is helpful to you ,

All the best!