Hello Aspirant,
The ICAR cutoff depends on the number if candidates who wrote the exam , the difficulty level of the exam and the number of seats. Based on the previous year cutoffs this year the cutoff score for OBC is 430 and expected rank is 680. So I am afraid it will be difficult to get a desired government college seat for your rank. Maybe you can wait till the last round of counselling and see your options. The admission possibility also depends on the competition for the course you opt for. Different course or specializations have different cutoffs.Hence do attend the counselling .
https://university.careers360.com/articles/colleges-accepting-icar-aieea-scores
All the best
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