Hello,

No, you cannot apply for the 7th round of BS-MS counseling at IISER without prior registration. Registration is a mandatory step in the IISER admission process. The 7th round of counseling is typically meant for candidates who have already registered and participated in the earlier rounds but have not yet secured a seat.

If you did not register during the initial registration period, you would not be eligible to participate in the counseling rounds, including the 7th round. If you missed the registration deadline, you would have to wait for the next admission cycle to apply.

Hope it helps !