Hello aspirant,
For getting top colleges in bihar you need to clear exams like Jee advanced to get iit Patna, to get nit Patna you need to clear Jee mains, and to get admission in other colleges of bihar you need to clear BCECE examination which is bihar combined entrance competitive examination board , only board marks won't help.
Hope it helps.
For getting more information regarding BCECE you can follow the link given below :
https://engineering-careers360-com.cdn.ampproject.org/v/s/engineering.careers360.com/articles/bcece/amp?amp_js_v=a2&amp_gsa=1&usqp=mq331AQA#referrer=https%3A%2F%2Fwww.google.com&amp_tf=From%20%251%24s&ampshare=https%3A%2F%2Fengineering.careers360.com%2Farticles%2Fbcece

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