Sir, kya CBSE board ki NCERT and UP board ki NCERT book (11th,12th ki) dono same he ya alag he
Differences observe donly if edition is older version.
Rest overall 99% similarities.
You can check following articles for more information.
https://timesofindia.indiatimes.com/city/allahabad/ncert-books-on-up-board-website-in-new-session/articleshow/62784685.cms