Dear student

As you have chosen biology as main stream subject then you will have to write exam of biology, chemistry , physics , English and Hindi. These are the compulsory paper you will have to write. You will have to give exam only when you will choose mathematics as additional subject during your registration form or otherwise if you don't choose any additional (optional) subject then you will not have to appear for that. So mathematics is not mandatory paper in biology paper unless you choose mathematics as additional paper. Between in English and Hindi you will have to choose for which subject you want to write 150 marks and 50 marks. There will be single language paper of 100 marks which you can choose as you want either English or Hindi. Second paper will be of 50 marks for each Eng and Hindi.

You can also choose the language of writing answer in your answersheet either English or Hindi as per your convenience.

So these all are the necessary information about your 12th Bihar board intermediate examination.

So don't worry you will not have to write mathematics exam unless you choose it as additional subject.

Hope this information helps you

All the best !