I choose exam mode in marathi medium in MH-CET LL.B. than am eligible for both medium colleges? For example marathi or English medium also.

Yes, you can appear for  the 12th improvement examination even while pursing your Polytechnic course . the education boards allow students to reppear for improvement exams to enhance  their marks, and it does not affect your current Polytechnic studies . you just need to ensure that your exam date do not clash with your Polytechnic semester exams or practicals . also makes sure to apply for the improvement exam through your respective board within the  spacifiied  registration period. improving your 12th marks can be beneficial for future admission, degree programs, or better placement opportunity after Polytechnic.

While it's not strictly necessary to solve Maharashtra 12th sample papers for the board exams, doing so can be highly beneficial. Here are some reasons why you must practice them:

1. Sample papers help you understand the structure and format of the actual exam, including the types of questions that are typically asked.
2. Practicing the Maharashtra 12th sample papers allows you to develop your time management skills, helping you to allocate the right amount of time to each section during the actual exam.
3. Working through sample papers can help you identify topics where you may need more revision or practice.
4. Regular practice can boost your confidence, making you feel more prepared on exam day.
5. Sample papers serve as a good revision tool, reinforcing what you've learned throughout the year.

If you choose not to solve them, make sure you have other effective study methods in place, such as reviewing your textbooks, attending revision classes, or studying with peers. Ultimately, the key is to find a study strategy that works best for you.