Yes you can try that but there's obviously enough of differences between the two examinations. So you need to study a bit extra and even more for CET too while preparing for CAT examination. CAT exam will get you admission into MBA courses.

Kindly refer to the websites below to know more about both of the examinations even in detail -

https://bschool.careers360.com/exams/cat

https://engineering.careers360.com/articles/mht-cet

Best wishes. Thank you.