The entrance exam is kind of similar to other exams with having 4 sections, the distribution of questions is - physics (50), chem-(50), maths-(70) and apptitute(30).
The syllabus contains topics from both 11th and 12th but more emphasis is given on 12th syllabus than 11th so make sure to cover all the topics of 12th from NCERT. Just solve questions of ncert and you're very much prepared.
Thank you.
Hope it helps.