IMUCET

Yes, the question papers are different. You can check more details on IMU website. If you want please check the website. For your reference I'm putting here the mail id. www.imu.edu.in

You can refer to this link to get the tips, question paper and other important information regarding the IMUCET
https://www.shiksha.com/university/indian-maritime-university-Chennai/imucet-exam-syllabus.

Without entrance exam, you cannot take admission here. You can apply for admission.
Good luck.

Here you can check all the eligibility criteria to get admission in this institute
https://www.shiksha.com/college/tolani-maritime-institute-tmi-talegaon-dabhade-Pune-24846/admission.

For engineering entrance exam, the questions that come are from both 11th and 12th, i.e. combined syllabus. The main aim of engineering entrance exams is to check the overall knowledge in the subject physics chemistry and mathematics, because they provide the chance to become an engineer. All entrance exams have questions from both the classes.

Hello Lawrence,
I am attaching a link that will give you all the required information about different aspects of the admission procedure in TMI.
http://www.tmi.tolani.edu/admission/b-tech-marine-engineering/selection-procedure/