Dear Abhinandan,
I assume that the total fee of B.Tech means the course fee for the first year plus the registration fee. If you don't want admission in that college, I think you would not get full refund of the fee because the college has also shared some loss in this. So, I think you would be able to get the refund except registration fee.
Candidates can check B.Tech Cut off for Top IITs & NITs here.
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