Yes, the class 11th portion has also been included in the SITEEE exam for B.Tech., and in this exam, the syllabus will be approximately 40% of the total course of the exam, hence, study accordingly. However, the SITEEE exam syllabus includes both class 11 and class 12 topics for Physics, Chemistry and Mathematics. Candidates can score better marks in the SITEEE exam by starting their preparation early. SITEEE is conducted by Symbiosis International, Pune, for admission into the various B.Tech. courses. The SITEEE exam pattern includes questions from Physics, Chemistry and Mathematics. 15 questions are asked from each Chemistry and Physics, while 30 questions are asked from the Mathematics section. There are a total of 60 questions asked in the entrance exam. Know more about the SITEEE exam: https://www.shiksha.com/engineering/siteee-exam