Hello,

Due to covid pandemic there has been reduction in the syllabus of class 11th and 12th CBSE board by 30%, you can get the revised syllabus of all the subject from both classes by visiting the official website of CBSE at http://cbseacademic.nic.in/Revisedcurriculum_2021.html ,visit the site, click on the link of senior secondary revised syllabus, you will get the detailed  information for the same.