Hello,

You can ask your seniors about their experience in the exam. They will guide you better. Semester papers are not posted publicly and for BSc there is no surity if they had stored it or not. These online storing work is done by the board officials. If they have done it then you can find the previous papers in the webpage.

else you have to prepare by yourself. To know the experience you can ask to your seniors or your respective teacher. for the exam patter you can ask to your teacher.

Hope it helps!