Sunita, it is a good idea to go through the sample papers to get an idea of the exam pattern, marking scheme and time management techniques.

You can download the Chemistry sample paper for 2020 for class 12th MP board from the given link: https://school.careers360.com/download/sample-papers/mp-board-12th-chemistry-model-paper

You can also get the sample papers of other subjects for class 12th boards like Physics, Mathematics, Biology, English, etc from the given link: https://school.careers360.com/articles/mp-board-12th-model-paper-1/amp