Hello aspirant,
Yes you have missed the date to fill the form just by one day, and there is no chance of another delay in exams, but although you have missed your chance to fill the form there will be colleges at the end with remaining seat which will be filled via management quotas and you can apply at that time and have admission.
There are numerous colleges in Bihar and you can get admission even without BCECE you just have to find a college that takes direct admission or holds a separate exam for its entrance.
I hope it helps.
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